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<div class="header">
  <div class="headertitle"><div class="title">cvbsgenerator.cpp</div></div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/*</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">  Created by Fabrizio Di Vittorio (fdivitto2013@gmail.com) - &lt;http://www.fabgl.com&gt;</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment">  Copyright (c) 2019-2022 Fabrizio Di Vittorio.</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment">  All rights reserved.</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"></span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"></span> </div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment">* Please contact fdivitto2013@gmail.com if you need a commercial license.</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"></span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"></span> </div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment">* This library and related software is available under GPL v3.</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"></span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment">  FabGL is free software: you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment">  it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment">  the Free Software Foundation, either version 3 of the License, or</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment">  (at your option) any later version.</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"></span> </div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment">  FabGL is distributed in the hope that it will be useful,</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">  but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment">  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment">  GNU General Public License for more details.</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment"></span> </div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment">  You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment">  along with FabGL.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment"> */</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span> </div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="preprocessor">#include &quot;freertos/FreeRTOS.h&quot;</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="preprocessor">#include &quot;freertos/task.h&quot;</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span> </div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="preprocessor">#include &quot;driver/dac.h&quot;</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="preprocessor">#include &quot;soc/i2s_reg.h&quot;</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="preprocessor">#include &quot;driver/periph_ctrl.h&quot;</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="preprocessor">#include &quot;soc/rtc.h&quot;</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="preprocessor">#include &lt;soc/sens_reg.h&gt;</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span> </div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="preprocessor">#include &quot;<a class="code" href="fabutils_8h.html">fabutils.h</a>&quot;</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="preprocessor">#include &quot;devdrivers/cvbsgenerator.h&quot;</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span> </div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span> </div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="preprocessor">#pragma GCC optimize (&quot;O2&quot;</span>)</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="keyword">namespace </span>fabgl {</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span> </div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment">// CVBS Standards</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span> </div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment">// interlaced PAL-B (max 640x480)</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_I_PAL_B : CVBSParams {</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span>  CVBS_I_PAL_B() {</div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span>    desc                         = <span class="stringliteral">&quot;I-PAL-B&quot;</span>;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span>    </div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span>    <span class="comment">//sampleRate_hz                = 17750000.0;  // = 1136/64*1000000</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span>    <span class="comment">//sampleRate_hz                = 4433618.75*4;  // = 1136/64*1000000</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span>    sampleRate_hz                = 17500000.0; <span class="comment">// 1120/64*1000000</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span>    </div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span>    subcarrierFreq_hz            = 4433618.75;</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span>    line_us                      = 64.0;</div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span>    hline_us                     = 32.0;</div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span>    hsync_us                     = 4.7;</div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span>    backPorch_us                 = 5.7;</div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span>    frontPorch_us                = 1.65;</div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span>    hblank_us                    = 1.0;</div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span>    burstCycles                  = 10.0;</div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span>    burstStart_us                = 0.9;</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span>    fieldLines                   = 312.5;</div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span>    longPulse_us                 = 27.3;</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span>    shortPulse_us                = 2.35;</div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span>    hsyncEdge_us                 = 0.3;</div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span>    vsyncEdge_us                 = 0.2;</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span>    blankLines                   = 19;</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span>    frameGroupCount              = 4;</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span>    preEqualizingPulseCount      = 0;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span>    vsyncPulseCount              = 5;</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span>    postEqualizingPulseCount     = 5;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span>    endFieldEqualizingPulseCount = 5;</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>    syncLevel                    = 0;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>    blackLevel                   = 25;</div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span>    whiteLevel                   = 79;</div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span>    burstAmp                     = 12;</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span>    defaultVisibleSamples        = 640;</div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span>    defaultVisibleLines          = 240;</div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span>    fieldStartingLine[0]         = 1;</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>    fieldStartingLine[1]         = 2;</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span>    fields                       = 2;</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span>    interlaceFactor              = 2;</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>  }</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span> </div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span>  <span class="keywordtype">double</span> getComposite(<span class="keywordtype">bool</span> oddLine, <span class="keywordtype">double</span> phase, <span class="keywordtype">double</span> red, <span class="keywordtype">double</span> green, <span class="keywordtype">double</span> blue, <span class="keywordtype">double</span> * <a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span>    *<a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>       = red * .299 + green * .587 + blue * .114;</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>    <span class="keywordtype">double</span> U = 0.493 * (blue - *<a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>);</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>    <span class="keywordtype">double</span> V = 0.877 * (red - *<a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>);</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>    <span class="keywordflow">return</span> U * sin(phase) + (oddLine ? 1. : -1.) * V * cos(phase);</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span>  }</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span>  <span class="keywordtype">double</span> getColorBurst(<span class="keywordtype">bool</span> oddLine, <span class="keywordtype">double</span> phase)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span>    <span class="comment">// color burst is still composed by V and U signals, but U is permanently inverted (-sin...). This results in +135/-135 degrees swinging burst!</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span>    <span class="keywordflow">return</span> -sin(phase) + (oddLine ? 1. : -1.) * cos(phase);</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>  }</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>  <span class="comment">// to support burst-blanking (Bruch blanking, Bruch sequence)... and to make my Tektronix VM700 happy!</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>  <span class="keywordtype">bool</span> lineHasColorBurst(<span class="keywordtype">int</span> frame, <span class="keywordtype">int</span> frameLine)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span>    <span class="keywordflow">if</span> (((frame == 1 || frame == 3) &amp;&amp; (frameLine &lt; 7 || (frameLine &gt; 309 &amp;&amp; frameLine &lt; 319) || frameLine &gt; 621)) ||</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span>        ((frame == 2 || frame == 4) &amp;&amp; (frameLine &lt; 6 || (frameLine &gt; 310 &amp;&amp; frameLine &lt; 320) || frameLine &gt; 622)))</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span>      <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// no color burst</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span>    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span>  }</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span>  </div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>} CVBS_I_PAL_B;</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span> </div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span> </div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="comment">// interlaced PAL-B wide (max 768x480)</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_I_PAL_B_WIDE : CVBS_I_PAL_B {</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>  CVBS_I_PAL_B_WIDE() : CVBS_I_PAL_B() {</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span>    desc                         = <span class="stringliteral">&quot;I-PAL-B-WIDE&quot;</span>;</div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span>    defaultVisibleSamples        = 768;</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>  }</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>} CVBS_I_PAL_B_WIDE;</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span><span class="comment">// progressive PAL-B (max 640x240)</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_P_PAL_B : CVBS_I_PAL_B {</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>  CVBS_P_PAL_B() : CVBS_I_PAL_B() {</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>    desc                         = <span class="stringliteral">&quot;P-PAL-B&quot;</span>;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>    fieldStartingLine[0]         = 1;</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>    fieldStartingLine[1]         = 1;</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>    interlaceFactor              = 1;</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span>  }</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span>} CVBS_P_PAL_B;</div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span> </div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span> </div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span><span class="comment">// progressive PAL-B wide (max 768x240)</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_P_PAL_B_WIDE : CVBS_P_PAL_B {</div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span>  CVBS_P_PAL_B_WIDE() : CVBS_P_PAL_B() {</div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno">  138</span>    desc                         = <span class="stringliteral">&quot;P-PAL-B-WIDE&quot;</span>;</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span>    defaultVisibleSamples        = 768;</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span>  }</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span>} CVBS_P_PAL_B_WIDE;</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span> </div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span> </div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span><span class="comment">// interlaced NTSC-M (max 640x200)</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_I_NTSC_M : CVBSParams {</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span>  CVBS_I_NTSC_M() {</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span>    desc                         = <span class="stringliteral">&quot;I-NTSC-M&quot;</span>;</div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span>    sampleRate_hz                = 14223774;    <span class="comment">// =904/63.555564*1000000</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span>    subcarrierFreq_hz            = 3579545.45;</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno">  150</span>    line_us                      = 63.555564;</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span>    hline_us                     = 31.777782;</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>    hsync_us                     = 4.7;</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span>    backPorch_us                 = 4.5;</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span>    frontPorch_us                = 1.5;</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span>    hblank_us                    = 1.5;</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span>    burstCycles                  = 9.0;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span>    burstStart_us                = 0.6;</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span>    fieldLines                   = 262.5;</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span>    longPulse_us                 = 27.3;</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span>    shortPulse_us                = 2.3;</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span>    hsyncEdge_us                 = 0.3;</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span>    vsyncEdge_us                 = 0.2;</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span>    blankLines                   = 30;</div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span>    frameGroupCount              = 2;</div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno">  165</span>    preEqualizingPulseCount      = 6;</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span>    vsyncPulseCount              = 6;</div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>    postEqualizingPulseCount     = 6;</div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span>    endFieldEqualizingPulseCount = 0;</div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span>    syncLevel                    = 0;</div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span>    blackLevel                   = 25;</div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span>    whiteLevel                   = 70;</div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span>    burstAmp                     = 15;</div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span>    defaultVisibleSamples        = 640;</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span>    defaultVisibleLines          = 200;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span>    fieldStartingLine[0]         = 1;</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span>    fieldStartingLine[1]         = 2;</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span>    fields                       = 2;</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno">  178</span>    interlaceFactor              = 2;</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span>  };</div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span>  </div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span>  <span class="keywordtype">double</span> getComposite(<span class="keywordtype">bool</span> oddLine, <span class="keywordtype">double</span> phase, <span class="keywordtype">double</span> red, <span class="keywordtype">double</span> green, <span class="keywordtype">double</span> blue, <span class="keywordtype">double</span> * <a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span>    *<a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>       = red * .299 + green * .587 + blue * .114;</div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span>    <span class="keywordtype">double</span> Q =  .413 * (blue - *<a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>) + .478 * (red - *<a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>);</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span>    <span class="keywordtype">double</span> I = -.269 * (blue - *<a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>) + .736 * (red - *<a class="code hl_variable" href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a>);</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>    <span class="keywordflow">return</span> Q * sin(phase + TORAD(33.)) + I * cos(phase + TORAD(33.));</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span>  }</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span>  <span class="keywordtype">double</span> getColorBurst(<span class="keywordtype">bool</span> oddLine, <span class="keywordtype">double</span> phase)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span>    <span class="comment">// burst is 180˚ on subcarrier</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span>    <span class="keywordflow">return</span> sin(phase + TORAD(180.));</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span>  }</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span>  <span class="keywordtype">bool</span> lineHasColorBurst(<span class="keywordtype">int</span> frame, <span class="keywordtype">int</span> frameLine)<span class="keyword"> const </span>{</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span>    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span>  }</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span>  </div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span>} CVBS_I_NTSC_M;</div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span> </div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span> </div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span><span class="comment">// interlaced NTSC-M wide (max 768x200)</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_I_NTSC_M_WIDE : CVBS_I_NTSC_M {</div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span>  CVBS_I_NTSC_M_WIDE() : CVBS_I_NTSC_M() {</div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span>    desc                         = <span class="stringliteral">&quot;I-NTSC-M-WIDE&quot;</span>;</div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span>    defaultVisibleSamples        = 768;</div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span>  };</div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span>} CVBS_I_NTSC_M_WIDE;</div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span> </div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span> </div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span><span class="comment">// progressive NTSC-M (max 640x200)</span></div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_P_NTSC_M : CVBS_I_NTSC_M {</div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span>  CVBS_P_NTSC_M() : CVBS_I_NTSC_M() {</div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span>    desc                         = <span class="stringliteral">&quot;P-NTSC-M&quot;</span>;</div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span>    fieldStartingLine[0]         = 1;</div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span>    fieldStartingLine[1]         = 1;</div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span>    interlaceFactor              = 1;</div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>  };</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span>} CVBS_P_NTSC_M;</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span> </div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span> </div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span><span class="comment">// progressive NTSC-M wide (max 768x200)</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_P_NTSC_M_WIDE : CVBS_P_NTSC_M {</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span>  CVBS_P_NTSC_M_WIDE() : CVBS_P_NTSC_M() {</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span>    desc                         = <span class="stringliteral">&quot;P-NTSC-M-WIDE&quot;</span>;</div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span>    defaultVisibleSamples        = 768;</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>  }</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span>} CVBS_P_NTSC_M_WIDE;</div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span> </div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span> </div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="comment">// progressive NTSC-M extended (max 768x240)</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">struct </span>CVBS_P_NTSC_M_EXT : CVBS_P_NTSC_M_WIDE {</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span>  CVBS_P_NTSC_M_EXT() : CVBS_P_NTSC_M_WIDE() {</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span>    desc                         = <span class="stringliteral">&quot;P-NTSC-M-EXT&quot;</span>;</div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span>    defaultVisibleLines          = 240;</div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>    blankLines                   = 17;</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span>  }</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span>} CVBS_P_NTSC_M_EXT;</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span> </div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span> </div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span> </div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span><span class="keyword">static</span> CVBSParams <span class="keyword">const</span> * CVBS_Standards[] = {</div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span>  &amp;CVBS_I_PAL_B,</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span>  &amp;CVBS_P_PAL_B,</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span>  &amp;CVBS_I_PAL_B_WIDE,</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span>  &amp;CVBS_P_PAL_B_WIDE,</div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span>  &amp;CVBS_I_NTSC_M,</div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span>  &amp;CVBS_P_NTSC_M,</div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span>  &amp;CVBS_I_NTSC_M_WIDE,</div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span>  &amp;CVBS_P_NTSC_M_WIDE,</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span>  &amp;CVBS_P_NTSC_M_EXT,</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span>};</div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span> </div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span> </div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span> </div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span> </div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span> </div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span> </div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span><span class="keyword">volatile</span> <span class="keywordtype">int</span>          CVBSGenerator::s_scanLine;</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span><span class="keyword">volatile</span> <span class="keywordtype">bool</span>         CVBSGenerator::s_VSync;</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span><span class="keyword">volatile</span> <span class="keywordtype">int</span>          CVBSGenerator::s_field;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span><span class="keyword">volatile</span> <span class="keywordtype">int</span>          CVBSGenerator::s_frame;</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span><span class="keyword">volatile</span> <span class="keywordtype">int</span>          CVBSGenerator::s_frameLine;</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span><span class="keyword">volatile</span> <span class="keywordtype">int</span>          CVBSGenerator::s_activeLineIndex;</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span><span class="keyword">volatile</span> scPhases_t * CVBSGenerator::s_subCarrierPhase;</div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span><span class="keyword">volatile</span> scPhases_t * CVBSGenerator::s_lineSampleToSubCarrierSample;</div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span><span class="keyword">volatile</span> int16_t      CVBSGenerator::s_firstVisibleSample;</div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span><span class="keyword">volatile</span> int16_t      CVBSGenerator::s_visibleSamplesCount;</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span><span class="keyword">volatile</span> <span class="keywordtype">bool</span>         CVBSGenerator::s_lineSwitch;</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span> </div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span> </div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span><span class="preprocessor">#if FABGLIB_CVBSCONTROLLER_PERFORMANCE_CHECK</span></div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span>  <span class="keyword">volatile</span> uint64_t s_cvbsctrlcycles = 0;</div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span><span class="preprocessor">#endif</span></div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span> </div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span> </div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span>CVBSGenerator::CVBSGenerator() :</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span>  m_DMAStarted(false),</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>  m_DMAChain(nullptr),</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span>  m_lsyncBuf(nullptr),</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span>  m_ssyncBuf(nullptr),</div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span>  m_lineBuf(nullptr),</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span>  m_isr_handle(nullptr),</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span>  m_drawScanlineCallback(nullptr),</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span>  m_subCarrierPhases(),</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span>  m_params(nullptr)</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span>{</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>  s_lineSampleToSubCarrierSample = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span>}</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span> </div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span> </div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span><span class="comment">// gpio can be:</span></div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span><span class="comment">//    GPIO_NUM_25 : gpio 25 DAC1 connected to DMA, gpio 26 set using setConstDAC()</span></div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span><span class="comment">//    GPIO_NUM_26 : gpio 26 DAC2 connected to DMA, gpio 25 set using setConstDAC()</span></div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span><span class="keywordtype">void</span> CVBSGenerator::setVideoGPIO(gpio_num_t gpio)</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span>{</div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span>  m_gpio = gpio;</div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span>}</div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span> </div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span> </div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span><span class="comment">// only I2S0 can control DAC channels</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span><span class="keywordtype">void</span> CVBSGenerator::runDMA(lldesc_t <span class="keyword">volatile</span> * dmaBuffers)</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span>{</div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span>  <span class="keywordflow">if</span> (!m_DMAStarted) {</div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span>    periph_module_enable(PERIPH_I2S0_MODULE);</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span> </div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span>    <span class="comment">// Initialize I2S device</span></div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span>    I2S0.conf.tx_reset                     = 1;</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span>    I2S0.conf.tx_reset                     = 0;</div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span> </div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span>    <span class="comment">// Reset DMA</span></div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span>    I2S0.lc_conf.in_rst                    = 1;</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span>    I2S0.lc_conf.in_rst                    = 0;</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span> </div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span>    <span class="comment">// Reset FIFO</span></div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span>    I2S0.conf.rx_fifo_reset                = 1;</div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span>    I2S0.conf.rx_fifo_reset                = 0;</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span>    </div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span>    <span class="comment">// false = use APLL, true use PLL_D2 clock</span></div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span>    <span class="keywordtype">bool</span> usePLL = m_params-&gt;sampleRate_hz == 16000000 || m_params-&gt;sampleRate_hz == 13333333.3334;</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span> </div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span>    <span class="keywordflow">if</span> (usePLL)</div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span>      I2S0.conf_chan.tx_chan_mod = (m_gpio == GPIO_NUM_25 ? 3 : 4);</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span>      I2S0.conf_chan.tx_chan_mod = (m_gpio == GPIO_NUM_25 ? 1 : 2);</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span> </div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span>    I2S0.fifo_conf.tx_fifo_mod_force_en    = 1;</div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span>    I2S0.fifo_conf.tx_fifo_mod             = 1;</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span>    I2S0.fifo_conf.dscr_en                 = 1;</div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span> </div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span>    I2S0.conf.tx_mono                      = 1;   <span class="comment">// =0?</span></div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span>    I2S0.conf.tx_start                     = 0;</div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span>    I2S0.conf.tx_msb_right                 = 1;</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span>    I2S0.conf.tx_right_first               = 1;</div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span>    I2S0.conf.tx_slave_mod                 = 0;</div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span>    I2S0.conf.tx_short_sync                = 0;</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span>    I2S0.conf.tx_msb_shift                 = 0;</div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span>    </div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span>    I2S0.conf2.lcd_en                      = 1;</div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span>    I2S0.conf2.camera_en                   = 0;</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span> </div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span>    <span class="keywordflow">if</span> (usePLL) {</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span>      <span class="comment">// valid just for 16MHz and 13.333Mhz</span></div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span>      I2S0.clkm_conf.clka_en               = 0;</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span>      I2S0.clkm_conf.clkm_div_a            = m_params-&gt;sampleRate_hz == 16000000 ? 2 : 1;</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span>      I2S0.clkm_conf.clkm_div_b            = 1;</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span>      I2S0.clkm_conf.clkm_div_num          = 2;</div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span>      I2S0.sample_rate_conf.tx_bck_div_num = 2;</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno">  347</span>    } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span>      <span class="comment">// valid for all other sample rates</span></div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span>      APLLParams p = { 0, 0, 0, 0 };</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno">  350</span>      <span class="keywordtype">double</span> error, out_freq;</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span>      uint8_t a = 1, b = 0;</div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span>      APLLCalcParams(m_params-&gt;sampleRate_hz * 2., &amp;p, &amp;a, &amp;b, &amp;out_freq, &amp;error);</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno">  353</span>      I2S0.clkm_conf.val                   = 0;</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span>      I2S0.clkm_conf.clkm_div_b            = b;</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span>      I2S0.clkm_conf.clkm_div_a            = a;</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno">  356</span>      I2S0.clkm_conf.clkm_div_num          = 2;  <span class="comment">// not less than 2</span></div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span>      I2S0.sample_rate_conf.tx_bck_div_num = 1;  <span class="comment">// this makes I2S0O_BCK = I2S0_CLK</span></div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span>      rtc_clk_apll_enable(<span class="keyword">true</span>, p.sdm0, p.sdm1, p.sdm2, p.o_div);</div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span>      I2S0.clkm_conf.clka_en               = 1;</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span>    }</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span> </div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span>    I2S0.sample_rate_conf.tx_bits_mod      = 16;</div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span> </div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span>    <span class="comment">// prepares for first frame and field</span></div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span>    s_field = m_params-&gt;fields - 1;</div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span>    s_frame = m_params-&gt;frameGroupCount - 1;</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span>    s_VSync = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span> </div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span>    <span class="comment">// ESP_INTR_FLAG_LEVEL1: should be less than PS2Controller interrupt level, necessary when running on the same core</span></div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno">  370</span>    <span class="keywordflow">if</span> (m_isr_handle == <span class="keyword">nullptr</span>) {</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span>      CoreUsage::setBusiestCore(<a class="code hl_define" href="fabglconf_8h_a447d700c9e4cb4889f3517928ecfac31.html#a447d700c9e4cb4889f3517928ecfac31">FABGLIB_VIDEO_CPUINTENSIVE_TASKS_CORE</a>);</div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span>      esp_intr_alloc_pinnedToCore(ETS_I2S0_INTR_SOURCE, ESP_INTR_FLAG_LEVEL1 | ESP_INTR_FLAG_IRAM, ISRHandler, <span class="keyword">this</span>, &amp;m_isr_handle, <a class="code hl_define" href="fabglconf_8h_a447d700c9e4cb4889f3517928ecfac31.html#a447d700c9e4cb4889f3517928ecfac31">FABGLIB_VIDEO_CPUINTENSIVE_TASKS_CORE</a>);</div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span>      I2S0.int_clr.val     = 0xFFFFFFFF;</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span>      I2S0.int_ena.out_eof = 1;</div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>    }</div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span>    </div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span>    I2S0.out_link.addr  = (uint32_t) &amp;dmaBuffers[0];</div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span>    I2S0.out_link.start = 1;</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span>    I2S0.conf.tx_start  = 1;</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span> </div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span>    dac_i2s_enable();</div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span>    <span class="keywordflow">if</span> (usePLL) {</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span>      <span class="comment">// enable both DACs</span></div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span>      dac_output_enable(DAC_CHANNEL_1); <span class="comment">// GPIO25: DAC1, right channel</span></div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>      dac_output_enable(DAC_CHANNEL_2); <span class="comment">// GPIO26: DAC2, left channel</span></div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span>    } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span>      <span class="comment">// enable just used DAC</span></div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span>      dac_output_enable(m_gpio == GPIO_NUM_25 ? DAC_CHANNEL_1 : DAC_CHANNEL_2);</div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span>    }</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span> </div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span>    m_DMAStarted = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span>  }</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span>}</div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span> </div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span> </div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span><span class="keyword">volatile</span> lldesc_t * CVBSGenerator::setDMANode(<span class="keywordtype">int</span> index, <span class="keyword">volatile</span> uint16_t * buf, <span class="keywordtype">int</span> len)</div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span>{</div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span>  m_DMAChain[index].eof          = 0;</div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span>  m_DMAChain[index].sosf         = 0;</div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span>  m_DMAChain[index].owner        = 1;</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span>  m_DMAChain[index].qe.stqe_next = (lldesc_t *) (m_DMAChain + index + 1);</div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span>  m_DMAChain[index].offset       = 0;</div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span>  m_DMAChain[index].size         = len * <span class="keyword">sizeof</span>(uint16_t);</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span>  m_DMAChain[index].length       = len * <span class="keyword">sizeof</span>(uint16_t);</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno">  405</span>  m_DMAChain[index].buf          = (uint8_t*) buf;</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span>  <span class="keywordflow">return</span> &amp;m_DMAChain[index];</div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span>}</div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno">  408</span> </div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span> </div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span><span class="keywordtype">void</span> CVBSGenerator::closeDMAChain(<span class="keywordtype">int</span> index)</div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span>{</div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span>  m_DMAChain[index].qe.stqe_next = (lldesc_t *) m_DMAChain;</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span>}</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno">  414</span> </div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span> </div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span><span class="keywordtype">void</span> CVBSGenerator::addExtraSamples(<span class="keywordtype">double</span> us, <span class="keywordtype">double</span> * aus, <span class="keywordtype">int</span> * node)</div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span>{</div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span>  <span class="keywordtype">int</span> extra_samples = imin((us - *aus) / m_sample_us, m_blackBufferLength) &amp; ~1;</div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno">  419</span>  <span class="keywordflow">if</span> (extra_samples &gt; 0) {</div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span>    setDMANode((*node)++, m_blackBuffer, extra_samples);</div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span>    *aus += extra_samples * m_sample_us;</div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno">  422</span>    printf(<span class="stringliteral">&quot;added %d extra samples\n&quot;</span>, extra_samples);</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span>  }</div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span>}</div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span> </div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span> </div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span><span class="comment">// align samples, incrementing or decrementing value</span></div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno">  428</span><span class="keyword">static</span> <span class="keywordtype">int</span> bestAlignValue(<span class="keywordtype">int</span> value)</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno">  429</span>{</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno">  430</span>  <span class="comment">// 2 samples</span></div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno">  431</span>  <span class="comment">//return value &amp; ~1;</span></div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno">  432</span> </div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno">  434</span>  <span class="comment">// 4 samples (round up or down)</span></div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno">  435</span>  <span class="keywordtype">int</span> up   = (value + 3) &amp; ~3;</div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno">  436</span>  <span class="keywordtype">int</span> down = (value &amp; ~3);</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno">  437</span>  <span class="keywordflow">return</span> abs(value - up) &lt; abs(value - down) ? up : down;</div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno">  438</span>  <span class="comment">//*/</span></div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno">  439</span>}</div>
<div class="line"><a id="l00440" name="l00440"></a><span class="lineno">  440</span> </div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno">  441</span> </div>
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno">  442</span><span class="keywordtype">void</span> CVBSGenerator::buildDMAChain()</div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno">  443</span>{</div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno">  444</span>  <span class="keywordtype">int</span> lineSamplesCount  = round(m_params-&gt;line_us / m_sample_us);</div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno">  445</span>  <span class="keywordtype">int</span> hlineSamplesCount = round(m_params-&gt;hline_us / m_sample_us);</div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno">  446</span> </div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno">  447</span>  <span class="comment">//printf(&quot;lineSamplesCount  = %d\n&quot;, lineSamplesCount);</span></div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno">  448</span>  <span class="comment">//printf(&quot;hlineSamplesCount = %d\n\n&quot;, hlineSamplesCount);</span></div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno">  449</span> </div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno">  450</span>  <span class="comment">// make sizes aligned</span></div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno">  451</span>  lineSamplesCount      = bestAlignValue(lineSamplesCount);</div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno">  452</span>  hlineSamplesCount     = bestAlignValue(hlineSamplesCount);</div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno">  453</span>    </div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno">  454</span>  m_actualLine_us  = lineSamplesCount * m_sample_us;</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno">  455</span>  m_actualHLine_us = hlineSamplesCount * m_sample_us;</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno">  456</span> </div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno">  457</span>  <span class="comment">//printf(&quot;adj lineSamplesCount  = %d\n&quot;, lineSamplesCount);</span></div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno">  458</span>  <span class="comment">//printf(&quot;adj hlineSamplesCount = %d\n&quot;, hlineSamplesCount);</span></div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno">  459</span>  <span class="comment">//printf(&quot;actual line duration       = %.6f us\n&quot;, m_actualLine_us);</span></div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno">  460</span>  <span class="comment">//printf(&quot;actual half line duration  = %.6f us\n&quot;, m_actualHLine_us);</span></div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno">  461</span> </div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno">  462</span>  <span class="comment">// setup long sync pulse buffer</span></div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno">  463</span>  m_lsyncBuf = (<span class="keyword">volatile</span> uint16_t *) heap_caps_malloc(hlineSamplesCount * <span class="keyword">sizeof</span>(uint16_t), MALLOC_CAP_DMA);</div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno">  464</span>  <span class="keywordtype">int</span> lsyncStart = 0;</div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno">  465</span>  <span class="keywordtype">int</span> lsyncEnd   = m_params-&gt;longPulse_us / m_sample_us;</div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno">  466</span>  <span class="keywordtype">int</span> vedgeLen   = ceil(m_params-&gt;vsyncEdge_us / m_sample_us);</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno">  467</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = 0, fallCount = vedgeLen, riseCount = 0; s &lt; hlineSamplesCount; ++s) {</div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno">  468</span>    <span class="keywordflow">if</span> (s &lt; lsyncStart + vedgeLen)</div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno">  469</span>      m_lsyncBuf[s ^ 1] = (m_params-&gt;syncLevel + m_params-&gt;blackLevel * --fallCount / vedgeLen) &lt;&lt; 8;    <span class="comment">// falling edge</span></div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno">  470</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s &lt;= lsyncEnd - vedgeLen)</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno">  471</span>      m_lsyncBuf[s ^ 1] = m_params-&gt;syncLevel &lt;&lt; 8;                                                      <span class="comment">// sync</span></div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno">  472</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s &lt; lsyncEnd)</div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno">  473</span>      m_lsyncBuf[s ^ 1] = (m_params-&gt;syncLevel + m_params-&gt;blackLevel * ++riseCount / vedgeLen) &lt;&lt; 8;    <span class="comment">// rising edge</span></div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno">  474</span>    <span class="keywordflow">else</span></div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno">  475</span>      m_lsyncBuf[s ^ 1] = m_params-&gt;blackLevel &lt;&lt; 8;                                                     <span class="comment">// black level</span></div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno">  476</span>  }</div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno">  477</span>  </div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno">  478</span>  <span class="comment">// setup short sync pulse buffer and black buffer</span></div>
<div class="line"><a id="l00479" name="l00479"></a><span class="lineno">  479</span>  m_blackBuffer = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno">  480</span>  m_ssyncBuf    = (<span class="keyword">volatile</span> uint16_t *) heap_caps_malloc(hlineSamplesCount * <span class="keyword">sizeof</span>(uint16_t), MALLOC_CAP_DMA);</div>
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno">  481</span>  <span class="keywordtype">int</span> ssyncStart = 0;</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno">  482</span>  <span class="keywordtype">int</span> ssyncEnd   = m_params-&gt;shortPulse_us / m_sample_us;</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno">  483</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = 0, fallCount = vedgeLen, riseCount = 0; s &lt; hlineSamplesCount; ++s) {</div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno">  484</span>    <span class="keywordflow">if</span> (s &lt; ssyncStart + vedgeLen)</div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno">  485</span>      m_ssyncBuf[s ^ 1] = (m_params-&gt;syncLevel + m_params-&gt;blackLevel * --fallCount / vedgeLen) &lt;&lt; 8;    <span class="comment">// falling edge</span></div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno">  486</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s &lt;= ssyncEnd - vedgeLen)</div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno">  487</span>      m_ssyncBuf[s ^ 1] = m_params-&gt;syncLevel &lt;&lt; 8;                                                      <span class="comment">// sync</span></div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno">  488</span>    <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s &lt; ssyncEnd)</div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno">  489</span>      m_ssyncBuf[s ^ 1] = (m_params-&gt;syncLevel + m_params-&gt;blackLevel * ++riseCount / vedgeLen) &lt;&lt; 8;    <span class="comment">// rising edge</span></div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno">  490</span>    <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno">  491</span>      m_ssyncBuf[s ^ 1] = m_params-&gt;blackLevel &lt;&lt; 8;                                                     <span class="comment">// black level</span></div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno">  492</span>      <span class="keywordflow">if</span> (!m_blackBuffer &amp;&amp; !(s &amp; 3)) {</div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno">  493</span>        m_blackBuffer       = &amp;m_ssyncBuf[s ^ 1];</div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno">  494</span>        m_blackBufferLength = hlineSamplesCount - s;</div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno">  495</span>      }</div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno">  496</span>    }</div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno">  497</span>  }</div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno">  498</span> </div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno">  499</span>  <span class="comment">// setup line buffer</span></div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno">  500</span>  m_lineBuf = (<span class="keyword">volatile</span> uint16_t * *) malloc(CVBS_ALLOCATED_LINES * <span class="keyword">sizeof</span>(uint16_t*));</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno">  501</span>  <span class="keywordtype">int</span> hsyncStart = 0;</div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno">  502</span>  <span class="keywordtype">int</span> hsyncEnd   = (m_params-&gt;hsync_us + m_params-&gt;hsyncEdge_us) / m_sample_us;</div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno">  503</span>  <span class="keywordtype">int</span> hedgeLen   = ceil(m_params-&gt;hsyncEdge_us / m_sample_us);</div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno">  504</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> l = 0; l &lt; CVBS_ALLOCATED_LINES; ++l) {</div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno">  505</span>    m_lineBuf[l] = (<span class="keyword">volatile</span> uint16_t *) heap_caps_malloc(lineSamplesCount * <span class="keyword">sizeof</span>(uint16_t), MALLOC_CAP_DMA);</div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno">  506</span>    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = 0, fallCount = hedgeLen, riseCount = 0; s &lt; lineSamplesCount; ++s) {</div>
<div class="line"><a id="l00507" name="l00507"></a><span class="lineno">  507</span>      <span class="keywordflow">if</span> (s &lt; hsyncStart + hedgeLen)</div>
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno">  508</span>        m_lineBuf[l][s ^ 1] = (m_params-&gt;syncLevel + m_params-&gt;blackLevel * --fallCount / hedgeLen) &lt;&lt; 8;    <span class="comment">// falling edge</span></div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno">  509</span>      <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s &lt;= hsyncEnd - hedgeLen)</div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno">  510</span>        m_lineBuf[l][s ^ 1] = m_params-&gt;syncLevel &lt;&lt; 8;                                                      <span class="comment">// sync</span></div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno">  511</span>      <span class="keywordflow">else</span> <span class="keywordflow">if</span> (s &lt; hsyncEnd)</div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno">  512</span>        m_lineBuf[l][s ^ 1] = (m_params-&gt;syncLevel + m_params-&gt;blackLevel * ++riseCount / hedgeLen) &lt;&lt; 8;    <span class="comment">// rising edge</span></div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno">  513</span>      <span class="keywordflow">else</span></div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno">  514</span>        m_lineBuf[l][s ^ 1] = m_params-&gt;blackLevel &lt;&lt; 8;                                                     <span class="comment">// back porch, active line, front porch</span></div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno">  515</span>    }</div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno">  516</span>  }</div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno">  517</span>  </div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno">  518</span>  <span class="comment">// line sample (full line, from hsync to front porch) to m_colorBurstLUT[] item</span></div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno">  519</span>  s_lineSampleToSubCarrierSample = (<span class="keyword">volatile</span> scPhases_t *) heap_caps_malloc(lineSamplesCount * <span class="keyword">sizeof</span>(scPhases_t), MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL);</div>
<div class="line"><a id="l00520" name="l00520"></a><span class="lineno">  520</span>  <span class="keywordtype">double</span> K = m_params-&gt;subcarrierFreq_hz * CVBS_SUBCARRIERPHASES / m_params-&gt;sampleRate_hz;</div>
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno">  521</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = 0; s &lt; lineSamplesCount; ++s)</div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno">  522</span>    s_lineSampleToSubCarrierSample[s] = round(fmod(K * s, CVBS_SUBCARRIERPHASES));</div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno">  523</span>  </div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno">  524</span>  <span class="comment">// setup burst LUT</span></div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno">  525</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> line = 0; line &lt; 2; ++line) {</div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno">  526</span>    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> sample = 0; sample &lt; CVBS_SUBCARRIERPHASES * 2; ++sample) {</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno">  527</span>      <span class="keywordtype">double</span> phase = 2. * M_PI * sample / CVBS_SUBCARRIERPHASES;</div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno">  528</span>      <span class="keywordtype">double</span> burst = m_params-&gt;getColorBurst(line == 0, phase);</div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno">  529</span>      m_colorBurstLUT[line][sample] = (uint16_t)(m_params-&gt;blackLevel + m_params-&gt;burstAmp * burst) &lt;&lt; 8;</div>
<div class="line"><a id="l00530" name="l00530"></a><span class="lineno">  530</span>    }</div>
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno">  531</span>  }</div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno">  532</span>  </div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno">  533</span>  <span class="comment">// calculates nodes count</span></div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno">  534</span>  <span class="keywordtype">int</span> DMAChainLength = m_params-&gt;preEqualizingPulseCount +</div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno">  535</span>                       m_params-&gt;vsyncPulseCount +</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno">  536</span>                       m_params-&gt;postEqualizingPulseCount +</div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno">  537</span>                       m_params-&gt;endFieldEqualizingPulseCount +</div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno">  538</span>                       ceil(m_params-&gt;fieldLines) * m_params-&gt;fields + 2;</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno">  539</span> </div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno">  540</span>  m_DMAChain = (<span class="keyword">volatile</span> lldesc_t *) heap_caps_malloc(DMAChainLength * <span class="keyword">sizeof</span>(lldesc_t), MALLOC_CAP_DMA);</div>
<div class="line"><a id="l00541" name="l00541"></a><span class="lineno">  541</span>  </div>
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno">  542</span>  <span class="comment">//printf(&quot;m_DMAChain size: %d bytes (%d items)\n&quot;, DMAChainLength * sizeof(lldesc_t), DMAChainLength);</span></div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno">  543</span> </div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno">  544</span>  <span class="comment">// associate DMA chain nodes to buffers</span></div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno">  545</span> </div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno">  546</span><span class="preprocessor">  #define SHOWDMADETAILS 0</span></div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno">  547</span> </div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno">  548</span>  <span class="keywordtype">int</span> node = 0;</div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno">  549</span>  <span class="keyword">volatile</span> lldesc_t * nodeptr = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno">  550</span>  </div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno">  551</span>  <span class="comment">// microseconds since start of frame sequence</span></div>
<div class="line"><a id="l00552" name="l00552"></a><span class="lineno">  552</span>  <span class="keywordtype">double</span> us = m_params-&gt;hsyncEdge_us / 2.;</div>
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno">  553</span>  </div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno">  554</span>  <span class="comment">// microseconds since start of frame sequence: actual value, sample size rounded</span></div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno">  555</span>  <span class="keywordtype">double</span> aus = us;</div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno">  556</span> </div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno">  557</span>  <span class="keywordtype">bool</span> lineSwitch = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno">  558</span> </div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno">  559</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> frame = 1; frame &lt;= m_params-&gt;frameGroupCount; ++frame) {</div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno">  560</span> </div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno">  561</span><span class="preprocessor">    #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno">  562</span>    printf(<span class="stringliteral">&quot;frame = %d\n&quot;</span>, frame);</div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno">  563</span><span class="preprocessor">    #endif</span></div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno">  564</span> </div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno">  565</span>    <span class="comment">// setup subcarrier phases buffer</span></div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno">  566</span>    m_subCarrierPhases[frame - 1] = (<span class="keyword">volatile</span> scPhases_t *) heap_caps_malloc(m_linesPerFrame * <span class="keyword">sizeof</span>(scPhases_t), MALLOC_CAP_8BIT | MALLOC_CAP_INTERNAL);</div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno">  567</span> </div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno">  568</span>    <span class="keywordtype">double</span> frameLine = 1.0;</div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno">  569</span> </div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno">  570</span>    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> field = 1; field &lt;= m_params-&gt;fields; ++field) {</div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno">  571</span> </div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno">  572</span><span class="preprocessor">      #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno">  573</span>      printf(<span class="stringliteral">&quot;  field = %d\n&quot;</span>, field);</div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno">  574</span><span class="preprocessor">      #endif</span></div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno">  575</span> </div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno">  576</span>      m_startingScanLine[field - 1] = m_params-&gt;fieldStartingLine[field - 1] - 1;</div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno">  577</span> </div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno">  578</span>      <span class="keywordtype">double</span> fieldLine        = 1.0;</div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno">  579</span>      <span class="keywordtype">bool</span>   startOfFieldISR  = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno">  580</span>      <span class="keywordtype">bool</span>   firstActiveLine  = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno">  581</span>      <span class="keywordtype">int</span>    activeLineIndex  = 0;</div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno">  582</span>      </div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno">  583</span>      <span class="keywordflow">while</span> (fieldLine &lt; m_params-&gt;fieldLines + 1.0) {</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno">  584</span>      </div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno">  585</span><span class="preprocessor">        #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno">  586</span>        printf(<span class="stringliteral">&quot;    frameLine = %f  fieldLine = %f  &quot;</span>, frameLine, fieldLine);</div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno">  587</span><span class="preprocessor">        #endif</span></div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno">  588</span>        </div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno">  589</span>        <span class="keywordtype">double</span> ipart;</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno">  590</span>        <span class="keywordtype">double</span> subCarrierPhase = modf(m_params-&gt;subcarrierFreq_hz * aus / 1000000., &amp;ipart); <span class="comment">// 0.0 = 0˚ ... 1.0 = 360˚</span></div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno">  591</span>        </div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno">  592</span>        <span class="keywordflow">if</span> (m_params-&gt;lineHasColorBurst(frame, frameLine)) {</div>
<div class="line"><a id="l00593" name="l00593"></a><span class="lineno">  593</span>          <span class="comment">// stores subcarrier phase (in samples) for this line</span></div>
<div class="line"><a id="l00594" name="l00594"></a><span class="lineno">  594</span>          m_subCarrierPhases[frame - 1][(int)frameLine - 1] = subCarrierPhase * CVBS_SUBCARRIERPHASES;</div>
<div class="line"><a id="l00595" name="l00595"></a><span class="lineno">  595</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00596" name="l00596"></a><span class="lineno">  596</span>          <span class="comment">// no burst for this line</span></div>
<div class="line"><a id="l00597" name="l00597"></a><span class="lineno">  597</span>          m_subCarrierPhases[frame - 1][(int)frameLine - 1] = CVBS_NOBURSTFLAG;</div>
<div class="line"><a id="l00598" name="l00598"></a><span class="lineno">  598</span>        }</div>
<div class="line"><a id="l00599" name="l00599"></a><span class="lineno">  599</span>        <span class="comment">//printf(&quot;frame=%d frameLine=%d scPhase=%.1f\n&quot;, frame, (int)frameLine, subCarrierPhase * 360.);</span></div>
<div class="line"><a id="l00600" name="l00600"></a><span class="lineno">  600</span>        <span class="comment">//printf(&quot;frame(0)=%d frameLine(0)=%d scPhase=%.1f scSample=%d\n&quot;, frame-1, (int)frameLine-1, subCarrierPhase * 360., m_subCarrierPhases[frame - 1][(int)frameLine - 1]);</span></div>
<div class="line"><a id="l00601" name="l00601"></a><span class="lineno">  601</span>        </div>
<div class="line"><a id="l00602" name="l00602"></a><span class="lineno">  602</span><span class="preprocessor">        #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00603" name="l00603"></a><span class="lineno">  603</span>        printf(<span class="stringliteral">&quot;SCPhase = %.2f  &quot;</span>, subCarrierPhase * 360.);</div>
<div class="line"><a id="l00604" name="l00604"></a><span class="lineno">  604</span>        printf(<span class="stringliteral">&quot;BurstPhase = %.2f (%c)  &quot;</span>, fmod(subCarrierPhase * 2. * M_PI + (lineSwitch ? 1 : -1) * 3. * M_PI / 4., 2. * M_PI) / M_PI * 180., lineSwitch ? <span class="charliteral">&#39;O&#39;</span> : <span class="charliteral">&#39;E&#39;</span>);</div>
<div class="line"><a id="l00605" name="l00605"></a><span class="lineno">  605</span><span class="preprocessor">        #endif</span></div>
<div class="line"><a id="l00606" name="l00606"></a><span class="lineno">  606</span>        </div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno">  607</span>        <span class="keywordflow">if</span> (fieldLine &lt; m_params-&gt;preEqualizingPulseCount * .5 + 1.0) {</div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno">  608</span>        </div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno">  609</span>          <span class="comment">// pre-equalizing short pulse (half line)</span></div>
<div class="line"><a id="l00610" name="l00610"></a><span class="lineno">  610</span><span class="preprocessor">          #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00611" name="l00611"></a><span class="lineno">  611</span>          printf(<span class="stringliteral">&quot;node = %d  - pre-equalizing pulse\n&quot;</span>, node);</div>
<div class="line"><a id="l00612" name="l00612"></a><span class="lineno">  612</span><span class="preprocessor">          #endif</span></div>
<div class="line"><a id="l00613" name="l00613"></a><span class="lineno">  613</span>          <span class="keywordflow">if</span> (frame == 1) {</div>
<div class="line"><a id="l00614" name="l00614"></a><span class="lineno">  614</span>            <span class="comment">//addExtraSamples(us, &amp;aus, &amp;node);</span></div>
<div class="line"><a id="l00615" name="l00615"></a><span class="lineno">  615</span>            nodeptr = setDMANode(node++, m_ssyncBuf, hlineSamplesCount);</div>
<div class="line"><a id="l00616" name="l00616"></a><span class="lineno">  616</span>          }</div>
<div class="line"><a id="l00617" name="l00617"></a><span class="lineno">  617</span>          frameLine += .5;</div>
<div class="line"><a id="l00618" name="l00618"></a><span class="lineno">  618</span>          fieldLine += .5;</div>
<div class="line"><a id="l00619" name="l00619"></a><span class="lineno">  619</span>          us        += m_params-&gt;hline_us;</div>
<div class="line"><a id="l00620" name="l00620"></a><span class="lineno">  620</span>          aus       += m_actualHLine_us;</div>
<div class="line"><a id="l00621" name="l00621"></a><span class="lineno">  621</span>        </div>
<div class="line"><a id="l00622" name="l00622"></a><span class="lineno">  622</span>        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (fieldLine &lt; (m_params-&gt;preEqualizingPulseCount + m_params-&gt;vsyncPulseCount) * .5 + 1.0) {</div>
<div class="line"><a id="l00623" name="l00623"></a><span class="lineno">  623</span>        </div>
<div class="line"><a id="l00624" name="l00624"></a><span class="lineno">  624</span>          <span class="comment">// vsync long pulse (half line)</span></div>
<div class="line"><a id="l00625" name="l00625"></a><span class="lineno">  625</span><span class="preprocessor">          #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00626" name="l00626"></a><span class="lineno">  626</span>          printf(<span class="stringliteral">&quot;node = %d  - vsync pulse&quot;</span>, node);</div>
<div class="line"><a id="l00627" name="l00627"></a><span class="lineno">  627</span><span class="preprocessor">          #endif</span></div>
<div class="line"><a id="l00628" name="l00628"></a><span class="lineno">  628</span>          <span class="keywordflow">if</span> (frame == 1) {</div>
<div class="line"><a id="l00629" name="l00629"></a><span class="lineno">  629</span>            <span class="comment">//addExtraSamples(us, &amp;aus, &amp;node);</span></div>
<div class="line"><a id="l00630" name="l00630"></a><span class="lineno">  630</span>            nodeptr = setDMANode(node++, m_lsyncBuf, hlineSamplesCount);</div>
<div class="line"><a id="l00631" name="l00631"></a><span class="lineno">  631</span>            <span class="keywordflow">if</span> (!startOfFieldISR) {</div>
<div class="line"><a id="l00632" name="l00632"></a><span class="lineno">  632</span>              <span class="comment">// generate interrupt at the first vsync, this will start drawing first lines</span></div>
<div class="line"><a id="l00633" name="l00633"></a><span class="lineno">  633</span>              nodeptr-&gt;eof    = 1;</div>
<div class="line"><a id="l00634" name="l00634"></a><span class="lineno">  634</span>              nodeptr-&gt;sosf   = 1;  <span class="comment">// internal flag to signal beginning of field</span></div>
<div class="line"><a id="l00635" name="l00635"></a><span class="lineno">  635</span>              startOfFieldISR = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00636" name="l00636"></a><span class="lineno">  636</span><span class="preprocessor">              #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno">  637</span>              printf(<span class="stringliteral">&quot;    EOF SOSF&quot;</span>);</div>
<div class="line"><a id="l00638" name="l00638"></a><span class="lineno">  638</span><span class="preprocessor">              #endif</span></div>
<div class="line"><a id="l00639" name="l00639"></a><span class="lineno">  639</span>            }</div>
<div class="line"><a id="l00640" name="l00640"></a><span class="lineno">  640</span>          }</div>
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno">  641</span><span class="preprocessor">          #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno">  642</span>          printf(<span class="stringliteral">&quot;\n&quot;</span>);</div>
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno">  643</span><span class="preprocessor">          #endif</span></div>
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno">  644</span>          frameLine += .5;</div>
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno">  645</span>          fieldLine += .5;</div>
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno">  646</span>          us        += m_params-&gt;hline_us;</div>
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno">  647</span>          aus       += m_actualHLine_us;</div>
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno">  648</span>          </div>
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno">  649</span>        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (fieldLine &lt; (m_params-&gt;preEqualizingPulseCount + m_params-&gt;vsyncPulseCount + m_params-&gt;postEqualizingPulseCount) * .5 + 1.0) {</div>
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno">  650</span>        </div>
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno">  651</span>          <span class="comment">// post-equalizing short pulse (half line)</span></div>
<div class="line"><a id="l00652" name="l00652"></a><span class="lineno">  652</span><span class="preprocessor">          #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00653" name="l00653"></a><span class="lineno">  653</span>          printf(<span class="stringliteral">&quot;node = %d  - post-equalizing pulse\n&quot;</span>, node);</div>
<div class="line"><a id="l00654" name="l00654"></a><span class="lineno">  654</span><span class="preprocessor">          #endif</span></div>
<div class="line"><a id="l00655" name="l00655"></a><span class="lineno">  655</span>          <span class="keywordflow">if</span> (frame == 1) {</div>
<div class="line"><a id="l00656" name="l00656"></a><span class="lineno">  656</span>            <span class="comment">//addExtraSamples(us, &amp;aus, &amp;node);</span></div>
<div class="line"><a id="l00657" name="l00657"></a><span class="lineno">  657</span>            nodeptr = setDMANode(node++, m_ssyncBuf, hlineSamplesCount);</div>
<div class="line"><a id="l00658" name="l00658"></a><span class="lineno">  658</span>          }</div>
<div class="line"><a id="l00659" name="l00659"></a><span class="lineno">  659</span>          frameLine += .5;</div>
<div class="line"><a id="l00660" name="l00660"></a><span class="lineno">  660</span>          fieldLine += .5;</div>
<div class="line"><a id="l00661" name="l00661"></a><span class="lineno">  661</span>          us        += m_params-&gt;hline_us;</div>
<div class="line"><a id="l00662" name="l00662"></a><span class="lineno">  662</span>          aus       += m_actualHLine_us;</div>
<div class="line"><a id="l00663" name="l00663"></a><span class="lineno">  663</span>          </div>
<div class="line"><a id="l00664" name="l00664"></a><span class="lineno">  664</span>        } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (fieldLine &lt; m_params-&gt;fieldLines - m_params-&gt;endFieldEqualizingPulseCount * .5 + 1.0) {</div>
<div class="line"><a id="l00665" name="l00665"></a><span class="lineno">  665</span>        </div>
<div class="line"><a id="l00666" name="l00666"></a><span class="lineno">  666</span>          <span class="comment">// active line</span></div>
<div class="line"><a id="l00667" name="l00667"></a><span class="lineno">  667</span>         </div>
<div class="line"><a id="l00668" name="l00668"></a><span class="lineno">  668</span><span class="preprocessor">          #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00669" name="l00669"></a><span class="lineno">  669</span>          printf(<span class="stringliteral">&quot;node = %d  - active line, &quot;</span>, node);</div>
<div class="line"><a id="l00670" name="l00670"></a><span class="lineno">  670</span><span class="preprocessor">          #endif</span></div>
<div class="line"><a id="l00671" name="l00671"></a><span class="lineno">  671</span>         </div>
<div class="line"><a id="l00672" name="l00672"></a><span class="lineno">  672</span>          <span class="keywordflow">if</span> (firstActiveLine) {</div>
<div class="line"><a id="l00673" name="l00673"></a><span class="lineno">  673</span>            m_firstActiveFrameLine[field - 1] = (int)frameLine - 1;</div>
<div class="line"><a id="l00674" name="l00674"></a><span class="lineno">  674</span>            m_firstActiveFieldLineSwitch[frame - 1][field - 1] = lineSwitch;</div>
<div class="line"><a id="l00675" name="l00675"></a><span class="lineno">  675</span>            firstActiveLine = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00676" name="l00676"></a><span class="lineno">  676</span>            activeLineIndex = 0;</div>
<div class="line"><a id="l00677" name="l00677"></a><span class="lineno">  677</span><span class="preprocessor">            #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00678" name="l00678"></a><span class="lineno">  678</span>            printf(<span class="stringliteral">&quot;FIRST ACTIVE, &quot;</span>);</div>
<div class="line"><a id="l00679" name="l00679"></a><span class="lineno">  679</span><span class="preprocessor">            #endif</span></div>
<div class="line"><a id="l00680" name="l00680"></a><span class="lineno">  680</span>          } <span class="keywordflow">else</span></div>
<div class="line"><a id="l00681" name="l00681"></a><span class="lineno">  681</span>            ++activeLineIndex;</div>
<div class="line"><a id="l00682" name="l00682"></a><span class="lineno">  682</span>            </div>
<div class="line"><a id="l00683" name="l00683"></a><span class="lineno">  683</span>          <span class="keywordflow">if</span> ((<span class="keywordtype">int</span>)fieldLine == m_firstVisibleFieldLine) {</div>
<div class="line"><a id="l00684" name="l00684"></a><span class="lineno">  684</span>            m_firstVisibleFrameLine[field - 1] = (int)frameLine - 1;</div>
<div class="line"><a id="l00685" name="l00685"></a><span class="lineno">  685</span><span class="preprocessor">            #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00686" name="l00686"></a><span class="lineno">  686</span>            printf(<span class="stringliteral">&quot;FIRST VISIBLE, &quot;</span>);</div>
<div class="line"><a id="l00687" name="l00687"></a><span class="lineno">  687</span><span class="preprocessor">            #endif</span></div>
<div class="line"><a id="l00688" name="l00688"></a><span class="lineno">  688</span>          } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ((<span class="keywordtype">int</span>)fieldLine == m_lastVisibleFieldLine) {</div>
<div class="line"><a id="l00689" name="l00689"></a><span class="lineno">  689</span>            m_lastVisibleFrameLine[field - 1] = (int)frameLine - 1;</div>
<div class="line"><a id="l00690" name="l00690"></a><span class="lineno">  690</span><span class="preprocessor">            #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00691" name="l00691"></a><span class="lineno">  691</span>            printf(<span class="stringliteral">&quot;LAST VISIBLE, &quot;</span>);</div>
<div class="line"><a id="l00692" name="l00692"></a><span class="lineno">  692</span><span class="preprocessor">            #endif</span></div>
<div class="line"><a id="l00693" name="l00693"></a><span class="lineno">  693</span>          }</div>
<div class="line"><a id="l00694" name="l00694"></a><span class="lineno">  694</span>         </div>
<div class="line"><a id="l00695" name="l00695"></a><span class="lineno">  695</span>          <span class="keywordtype">double</span> ipart;</div>
<div class="line"><a id="l00696" name="l00696"></a><span class="lineno">  696</span>          <span class="keywordflow">if</span> (modf(frameLine, &amp;ipart) == .5) {</div>
<div class="line"><a id="l00697" name="l00697"></a><span class="lineno">  697</span>            <span class="comment">// ending half of line (half line)</span></div>
<div class="line"><a id="l00698" name="l00698"></a><span class="lineno">  698</span><span class="preprocessor">            #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00699" name="l00699"></a><span class="lineno">  699</span>            printf(<span class="stringliteral">&quot;ending half&quot;</span>);</div>
<div class="line"><a id="l00700" name="l00700"></a><span class="lineno">  700</span><span class="preprocessor">            #endif</span></div>
<div class="line"><a id="l00701" name="l00701"></a><span class="lineno">  701</span>            <span class="keywordflow">if</span> (frame == 1) {</div>
<div class="line"><a id="l00702" name="l00702"></a><span class="lineno">  702</span>              <span class="comment">//addExtraSamples(us, &amp;aus, &amp;node);</span></div>
<div class="line"><a id="l00703" name="l00703"></a><span class="lineno">  703</span>              nodeptr = setDMANode(node++, m_lineBuf[activeLineIndex % CVBS_ALLOCATED_LINES] + hlineSamplesCount, hlineSamplesCount);</div>
<div class="line"><a id="l00704" name="l00704"></a><span class="lineno">  704</span>            }</div>
<div class="line"><a id="l00705" name="l00705"></a><span class="lineno">  705</span>            frameLine += .5;</div>
<div class="line"><a id="l00706" name="l00706"></a><span class="lineno">  706</span>            fieldLine += .5;</div>
<div class="line"><a id="l00707" name="l00707"></a><span class="lineno">  707</span>            us        += m_params-&gt;hline_us;</div>
<div class="line"><a id="l00708" name="l00708"></a><span class="lineno">  708</span>            aus       += m_actualHLine_us;</div>
<div class="line"><a id="l00709" name="l00709"></a><span class="lineno">  709</span>          } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (fieldLine + 1.0 &gt; m_params-&gt;fieldLines + 1.0 - m_params-&gt;endFieldEqualizingPulseCount * .5) {</div>
<div class="line"><a id="l00710" name="l00710"></a><span class="lineno">  710</span>            <span class="comment">// beginning half of line (half line)</span></div>
<div class="line"><a id="l00711" name="l00711"></a><span class="lineno">  711</span><span class="preprocessor">            #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00712" name="l00712"></a><span class="lineno">  712</span>            printf(<span class="stringliteral">&quot;beginning half&quot;</span>);</div>
<div class="line"><a id="l00713" name="l00713"></a><span class="lineno">  713</span><span class="preprocessor">            #endif</span></div>
<div class="line"><a id="l00714" name="l00714"></a><span class="lineno">  714</span>            <span class="keywordflow">if</span> (frame == 1) {</div>
<div class="line"><a id="l00715" name="l00715"></a><span class="lineno">  715</span>              <span class="comment">//addExtraSamples(us, &amp;aus, &amp;node);</span></div>
<div class="line"><a id="l00716" name="l00716"></a><span class="lineno">  716</span>              nodeptr = setDMANode(node++, m_lineBuf[activeLineIndex % CVBS_ALLOCATED_LINES], hlineSamplesCount);</div>
<div class="line"><a id="l00717" name="l00717"></a><span class="lineno">  717</span>            }</div>
<div class="line"><a id="l00718" name="l00718"></a><span class="lineno">  718</span>            frameLine += .5;</div>
<div class="line"><a id="l00719" name="l00719"></a><span class="lineno">  719</span>            fieldLine += .5;</div>
<div class="line"><a id="l00720" name="l00720"></a><span class="lineno">  720</span>            us        += m_params-&gt;hline_us;</div>
<div class="line"><a id="l00721" name="l00721"></a><span class="lineno">  721</span>            aus       += m_actualHLine_us;</div>
<div class="line"><a id="l00722" name="l00722"></a><span class="lineno">  722</span>          } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00723" name="l00723"></a><span class="lineno">  723</span>            <span class="comment">// full line</span></div>
<div class="line"><a id="l00724" name="l00724"></a><span class="lineno">  724</span><span class="preprocessor">            #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00725" name="l00725"></a><span class="lineno">  725</span>            printf(<span class="stringliteral">&quot;full&quot;</span>);</div>
<div class="line"><a id="l00726" name="l00726"></a><span class="lineno">  726</span><span class="preprocessor">            #endif</span></div>
<div class="line"><a id="l00727" name="l00727"></a><span class="lineno">  727</span>            <span class="keywordflow">if</span> (frame == 1) {</div>
<div class="line"><a id="l00728" name="l00728"></a><span class="lineno">  728</span>              <span class="keywordtype">int</span> l = activeLineIndex % CVBS_ALLOCATED_LINES;</div>
<div class="line"><a id="l00729" name="l00729"></a><span class="lineno">  729</span>              nodeptr = setDMANode(node++, m_lineBuf[l], lineSamplesCount);</div>
<div class="line"><a id="l00730" name="l00730"></a><span class="lineno">  730</span>            }</div>
<div class="line"><a id="l00731" name="l00731"></a><span class="lineno">  731</span>            frameLine += 1.0;</div>
<div class="line"><a id="l00732" name="l00732"></a><span class="lineno">  732</span>            fieldLine += 1.0;</div>
<div class="line"><a id="l00733" name="l00733"></a><span class="lineno">  733</span>            us        += m_params-&gt;line_us;</div>
<div class="line"><a id="l00734" name="l00734"></a><span class="lineno">  734</span>            aus       += m_actualLine_us;</div>
<div class="line"><a id="l00735" name="l00735"></a><span class="lineno">  735</span>          }</div>
<div class="line"><a id="l00736" name="l00736"></a><span class="lineno">  736</span>            </div>
<div class="line"><a id="l00737" name="l00737"></a><span class="lineno">  737</span>          <span class="comment">// generate interrupt every half CVBS_ALLOCATED_LINES</span></div>
<div class="line"><a id="l00738" name="l00738"></a><span class="lineno">  738</span>          <span class="keywordflow">if</span> (frame == 1 &amp;&amp; (activeLineIndex % (CVBS_ALLOCATED_LINES / 2)) == 0) {</div>
<div class="line"><a id="l00739" name="l00739"></a><span class="lineno">  739</span>            nodeptr-&gt;eof = 1;</div>
<div class="line"><a id="l00740" name="l00740"></a><span class="lineno">  740</span><span class="preprocessor">            #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00741" name="l00741"></a><span class="lineno">  741</span>            printf(<span class="stringliteral">&quot;    EOF&quot;</span>);</div>
<div class="line"><a id="l00742" name="l00742"></a><span class="lineno">  742</span><span class="preprocessor">            #endif</span></div>
<div class="line"><a id="l00743" name="l00743"></a><span class="lineno">  743</span>          }</div>
<div class="line"><a id="l00744" name="l00744"></a><span class="lineno">  744</span><span class="preprocessor">          #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00745" name="l00745"></a><span class="lineno">  745</span>          printf(<span class="stringliteral">&quot;\n&quot;</span>);</div>
<div class="line"><a id="l00746" name="l00746"></a><span class="lineno">  746</span><span class="preprocessor">          #endif</span></div>
<div class="line"><a id="l00747" name="l00747"></a><span class="lineno">  747</span> </div>
<div class="line"><a id="l00748" name="l00748"></a><span class="lineno">  748</span> </div>
<div class="line"><a id="l00749" name="l00749"></a><span class="lineno">  749</span>        } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00750" name="l00750"></a><span class="lineno">  750</span>        </div>
<div class="line"><a id="l00751" name="l00751"></a><span class="lineno">  751</span>          <span class="comment">// end-field equalizing short pulse (half line)</span></div>
<div class="line"><a id="l00752" name="l00752"></a><span class="lineno">  752</span><span class="preprocessor">          #if SHOWDMADETAILS</span></div>
<div class="line"><a id="l00753" name="l00753"></a><span class="lineno">  753</span>          printf(<span class="stringliteral">&quot;node = %d  - end-field equalizing pulse\n&quot;</span>, node);</div>
<div class="line"><a id="l00754" name="l00754"></a><span class="lineno">  754</span><span class="preprocessor">          #endif</span></div>
<div class="line"><a id="l00755" name="l00755"></a><span class="lineno">  755</span>          <span class="keywordflow">if</span> (frame == 1) {</div>
<div class="line"><a id="l00756" name="l00756"></a><span class="lineno">  756</span>            <span class="comment">//addExtraSamples(us, &amp;aus, &amp;node);</span></div>
<div class="line"><a id="l00757" name="l00757"></a><span class="lineno">  757</span>            nodeptr = setDMANode(node++, m_ssyncBuf, hlineSamplesCount);</div>
<div class="line"><a id="l00758" name="l00758"></a><span class="lineno">  758</span>          }</div>
<div class="line"><a id="l00759" name="l00759"></a><span class="lineno">  759</span>          frameLine += .5;</div>
<div class="line"><a id="l00760" name="l00760"></a><span class="lineno">  760</span>          fieldLine += .5;</div>
<div class="line"><a id="l00761" name="l00761"></a><span class="lineno">  761</span>          us        += m_params-&gt;hline_us;</div>
<div class="line"><a id="l00762" name="l00762"></a><span class="lineno">  762</span>          aus       += m_actualHLine_us;</div>
<div class="line"><a id="l00763" name="l00763"></a><span class="lineno">  763</span>          </div>
<div class="line"><a id="l00764" name="l00764"></a><span class="lineno">  764</span>        }</div>
<div class="line"><a id="l00765" name="l00765"></a><span class="lineno">  765</span>        </div>
<div class="line"><a id="l00766" name="l00766"></a><span class="lineno">  766</span>        <span class="keywordflow">if</span> (frameLine == (<span class="keywordtype">int</span>)frameLine)</div>
<div class="line"><a id="l00767" name="l00767"></a><span class="lineno">  767</span>          lineSwitch = !lineSwitch;</div>
<div class="line"><a id="l00768" name="l00768"></a><span class="lineno">  768</span>        </div>
<div class="line"><a id="l00769" name="l00769"></a><span class="lineno">  769</span>      } <span class="comment">// field-line loop</span></div>
<div class="line"><a id="l00770" name="l00770"></a><span class="lineno">  770</span>      </div>
<div class="line"><a id="l00771" name="l00771"></a><span class="lineno">  771</span>      <span class="comment">//if (frame == 1)</span></div>
<div class="line"><a id="l00772" name="l00772"></a><span class="lineno">  772</span>      <span class="comment">//  addExtraSamples(us, &amp;aus, &amp;node);</span></div>
<div class="line"><a id="l00773" name="l00773"></a><span class="lineno">  773</span>            </div>
<div class="line"><a id="l00774" name="l00774"></a><span class="lineno">  774</span>    } <span class="comment">// field loop</span></div>
<div class="line"><a id="l00775" name="l00775"></a><span class="lineno">  775</span>    </div>
<div class="line"><a id="l00776" name="l00776"></a><span class="lineno">  776</span>  } <span class="comment">// frame loop</span></div>
<div class="line"><a id="l00777" name="l00777"></a><span class="lineno">  777</span>  </div>
<div class="line"><a id="l00778" name="l00778"></a><span class="lineno">  778</span>  <span class="comment">//printf(&quot;total us = %f\n&quot;, us);</span></div>
<div class="line"><a id="l00779" name="l00779"></a><span class="lineno">  779</span>    </div>
<div class="line"><a id="l00780" name="l00780"></a><span class="lineno">  780</span>  closeDMAChain(node - 1);</div>
<div class="line"><a id="l00781" name="l00781"></a><span class="lineno">  781</span>  </div>
<div class="line"><a id="l00782" name="l00782"></a><span class="lineno">  782</span>  <span class="comment">//printf(&quot;DMAChainLength = %d node = %d\n&quot;, DMAChainLength, node);</span></div>
<div class="line"><a id="l00783" name="l00783"></a><span class="lineno">  783</span>}</div>
<div class="line"><a id="l00784" name="l00784"></a><span class="lineno">  784</span> </div>
<div class="line"><a id="l00785" name="l00785"></a><span class="lineno">  785</span> </div>
<div class="line"><a id="l00786" name="l00786"></a><span class="lineno">  786</span><span class="keywordtype">void</span> CVBSGenerator::buildDMAChain_subCarrierOnly()</div>
<div class="line"><a id="l00787" name="l00787"></a><span class="lineno">  787</span>{</div>
<div class="line"><a id="l00788" name="l00788"></a><span class="lineno">  788</span>  <span class="keywordtype">double</span> fsamplesPerCycle = 1000000. / m_params-&gt;subcarrierFreq_hz / m_sample_us;</div>
<div class="line"><a id="l00789" name="l00789"></a><span class="lineno">  789</span>  <span class="keywordtype">int</span> samplesPerCycle = 1000000. / m_params-&gt;subcarrierFreq_hz / m_sample_us;</div>
<div class="line"><a id="l00790" name="l00790"></a><span class="lineno">  790</span>  </div>
<div class="line"><a id="l00791" name="l00791"></a><span class="lineno">  791</span>  <span class="keywordtype">int</span> cycles = 10;</div>
<div class="line"><a id="l00792" name="l00792"></a><span class="lineno">  792</span>  <span class="keywordflow">while</span> ( (fsamplesPerCycle * cycles) - (<span class="keywordtype">int</span>)(fsamplesPerCycle * cycles) &gt; 0.5)</div>
<div class="line"><a id="l00793" name="l00793"></a><span class="lineno">  793</span>    cycles += 1;</div>
<div class="line"><a id="l00794" name="l00794"></a><span class="lineno">  794</span>    </div>
<div class="line"><a id="l00795" name="l00795"></a><span class="lineno">  795</span>  samplesPerCycle = fsamplesPerCycle;</div>
<div class="line"><a id="l00796" name="l00796"></a><span class="lineno">  796</span>  </div>
<div class="line"><a id="l00797" name="l00797"></a><span class="lineno">  797</span>  <span class="keywordtype">int</span> count = (samplesPerCycle * cycles) &amp; ~1;</div>
<div class="line"><a id="l00798" name="l00798"></a><span class="lineno">  798</span> </div>
<div class="line"><a id="l00799" name="l00799"></a><span class="lineno">  799</span>  <span class="comment">//printf(&quot;samplesPerCycle=%d m_sample_us=%f subcarrierFreq_hz=%f cycles=%d count=%d\n&quot;, samplesPerCycle, m_sample_us, m_params-&gt;subcarrierFreq_hz, cycles, count);</span></div>
<div class="line"><a id="l00800" name="l00800"></a><span class="lineno">  800</span> </div>
<div class="line"><a id="l00801" name="l00801"></a><span class="lineno">  801</span>  m_lsyncBuf = (<span class="keyword">volatile</span> uint16_t *) heap_caps_malloc(count * <span class="keyword">sizeof</span>(uint16_t), MALLOC_CAP_DMA);</div>
<div class="line"><a id="l00802" name="l00802"></a><span class="lineno">  802</span>  </div>
<div class="line"><a id="l00803" name="l00803"></a><span class="lineno">  803</span>  <span class="keyword">auto</span> sinLUT = <span class="keyword">new</span> uint16_t[CVBS_SUBCARRIERPHASES * 2];</div>
<div class="line"><a id="l00804" name="l00804"></a><span class="lineno">  804</span>  </div>
<div class="line"><a id="l00805" name="l00805"></a><span class="lineno">  805</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> sample = 0; sample &lt; CVBS_SUBCARRIERPHASES * 2; ++sample) {</div>
<div class="line"><a id="l00806" name="l00806"></a><span class="lineno">  806</span>    <span class="keywordtype">double</span> phase = 2. * M_PI * sample / CVBS_SUBCARRIERPHASES;</div>
<div class="line"><a id="l00807" name="l00807"></a><span class="lineno">  807</span>    <span class="keywordtype">double</span> value = sin(phase);</div>
<div class="line"><a id="l00808" name="l00808"></a><span class="lineno">  808</span>    sinLUT[sample] = (uint16_t)(m_params-&gt;blackLevel + m_params-&gt;burstAmp * value) &lt;&lt; 8;</div>
<div class="line"><a id="l00809" name="l00809"></a><span class="lineno">  809</span>  }</div>
<div class="line"><a id="l00810" name="l00810"></a><span class="lineno">  810</span>  </div>
<div class="line"><a id="l00811" name="l00811"></a><span class="lineno">  811</span>  <span class="keywordtype">double</span> K = m_params-&gt;subcarrierFreq_hz * CVBS_SUBCARRIERPHASES / m_params-&gt;sampleRate_hz;</div>
<div class="line"><a id="l00812" name="l00812"></a><span class="lineno">  812</span>  </div>
<div class="line"><a id="l00813" name="l00813"></a><span class="lineno">  813</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> sample = 0; sample &lt; count; ++sample) {</div>
<div class="line"><a id="l00814" name="l00814"></a><span class="lineno">  814</span>    <span class="keyword">auto</span> idx = (int)(K * sample) % CVBS_SUBCARRIERPHASES;</div>
<div class="line"><a id="l00815" name="l00815"></a><span class="lineno">  815</span>    m_lsyncBuf[sample ^ 1] = sinLUT[idx];</div>
<div class="line"><a id="l00816" name="l00816"></a><span class="lineno">  816</span>    <span class="comment">//printf(&quot;%d = %d\n&quot;, sample, m_lsyncBuf[sample ^ 1] &gt;&gt; 8);</span></div>
<div class="line"><a id="l00817" name="l00817"></a><span class="lineno">  817</span>  }</div>
<div class="line"><a id="l00818" name="l00818"></a><span class="lineno">  818</span>  </div>
<div class="line"><a id="l00819" name="l00819"></a><span class="lineno">  819</span>  <span class="keyword">delete</span>[] sinLUT;</div>
<div class="line"><a id="l00820" name="l00820"></a><span class="lineno">  820</span>  </div>
<div class="line"><a id="l00821" name="l00821"></a><span class="lineno">  821</span>  m_DMAChain = (<span class="keyword">volatile</span> lldesc_t *) heap_caps_malloc(1 * <span class="keyword">sizeof</span>(lldesc_t), MALLOC_CAP_DMA);</div>
<div class="line"><a id="l00822" name="l00822"></a><span class="lineno">  822</span>  setDMANode(0, m_lsyncBuf, count);</div>
<div class="line"><a id="l00823" name="l00823"></a><span class="lineno">  823</span>  closeDMAChain(0);</div>
<div class="line"><a id="l00824" name="l00824"></a><span class="lineno">  824</span>}</div>
<div class="line"><a id="l00825" name="l00825"></a><span class="lineno">  825</span> </div>
<div class="line"><a id="l00826" name="l00826"></a><span class="lineno">  826</span> </div>
<div class="line"><a id="l00827" name="l00827"></a><span class="lineno">  827</span>CVBSParams <span class="keyword">const</span> * CVBSGenerator::getParamsFromDesc(<span class="keywordtype">char</span> <span class="keyword">const</span> * desc)</div>
<div class="line"><a id="l00828" name="l00828"></a><span class="lineno">  828</span>{</div>
<div class="line"><a id="l00829" name="l00829"></a><span class="lineno">  829</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> std : CVBS_Standards)</div>
<div class="line"><a id="l00830" name="l00830"></a><span class="lineno">  830</span>    <span class="keywordflow">if</span> (strcmp(std-&gt;desc, desc) == 0)</div>
<div class="line"><a id="l00831" name="l00831"></a><span class="lineno">  831</span>      <span class="keywordflow">return</span> std;</div>
<div class="line"><a id="l00832" name="l00832"></a><span class="lineno">  832</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00833" name="l00833"></a><span class="lineno">  833</span>}</div>
<div class="line"><a id="l00834" name="l00834"></a><span class="lineno">  834</span> </div>
<div class="line"><a id="l00835" name="l00835"></a><span class="lineno">  835</span> </div>
<div class="line"><a id="l00836" name="l00836"></a><span class="lineno">  836</span><span class="keywordtype">void</span> CVBSGenerator::setup(<span class="keywordtype">char</span> <span class="keyword">const</span> * desc)</div>
<div class="line"><a id="l00837" name="l00837"></a><span class="lineno">  837</span>{</div>
<div class="line"><a id="l00838" name="l00838"></a><span class="lineno">  838</span>  <span class="keyword">auto</span> params = getParamsFromDesc(desc);</div>
<div class="line"><a id="l00839" name="l00839"></a><span class="lineno">  839</span>  setup(params ? params : CVBS_Standards[0]);</div>
<div class="line"><a id="l00840" name="l00840"></a><span class="lineno">  840</span>}</div>
<div class="line"><a id="l00841" name="l00841"></a><span class="lineno">  841</span> </div>
<div class="line"><a id="l00842" name="l00842"></a><span class="lineno">  842</span>  </div>
<div class="line"><a id="l00843" name="l00843"></a><span class="lineno">  843</span><span class="keywordtype">void</span> CVBSGenerator::setup(CVBSParams <span class="keyword">const</span> * params)</div>
<div class="line"><a id="l00844" name="l00844"></a><span class="lineno">  844</span>{</div>
<div class="line"><a id="l00845" name="l00845"></a><span class="lineno">  845</span>  m_params                  = params;</div>
<div class="line"><a id="l00846" name="l00846"></a><span class="lineno">  846</span>  </div>
<div class="line"><a id="l00847" name="l00847"></a><span class="lineno">  847</span>  m_sample_us               = 1000000. / m_params-&gt;sampleRate_hz;</div>
<div class="line"><a id="l00848" name="l00848"></a><span class="lineno">  848</span>  </div>
<div class="line"><a id="l00849" name="l00849"></a><span class="lineno">  849</span>  <span class="keywordtype">double</span> activeLine_us      = m_params-&gt;line_us - m_params-&gt;hsync_us - m_params-&gt;backPorch_us - m_params-&gt;frontPorch_us;</div>
<div class="line"><a id="l00850" name="l00850"></a><span class="lineno">  850</span>  <span class="keywordtype">int</span> maxVisibleSamples     = activeLine_us / m_sample_us;</div>
<div class="line"><a id="l00851" name="l00851"></a><span class="lineno">  851</span>  m_linesPerFrame           = m_params-&gt;fieldLines * m_params-&gt;fields;</div>
<div class="line"><a id="l00852" name="l00852"></a><span class="lineno">  852</span> </div>
<div class="line"><a id="l00853" name="l00853"></a><span class="lineno">  853</span>  <span class="keywordtype">int</span> usableFieldLines      = m_params-&gt;fieldLines - m_params-&gt;blankLines;</div>
<div class="line"><a id="l00854" name="l00854"></a><span class="lineno">  854</span>  m_visibleLines            = imin(usableFieldLines, m_params-&gt;defaultVisibleLines);</div>
<div class="line"><a id="l00855" name="l00855"></a><span class="lineno">  855</span>    </div>
<div class="line"><a id="l00856" name="l00856"></a><span class="lineno">  856</span>  <span class="comment">// make sure m_visibleLines is divisible by CVBS_ALLOCATED_LINES</span></div>
<div class="line"><a id="l00857" name="l00857"></a><span class="lineno">  857</span>  m_visibleLines -= m_visibleLines % CVBS_ALLOCATED_LINES;</div>
<div class="line"><a id="l00858" name="l00858"></a><span class="lineno">  858</span>    </div>
<div class="line"><a id="l00859" name="l00859"></a><span class="lineno">  859</span>  m_firstVisibleFieldLine   = m_params-&gt;blankLines + ceil((usableFieldLines - m_visibleLines) / 2.0);</div>
<div class="line"><a id="l00860" name="l00860"></a><span class="lineno">  860</span>  m_lastVisibleFieldLine    = m_firstVisibleFieldLine + m_visibleLines - 1;</div>
<div class="line"><a id="l00861" name="l00861"></a><span class="lineno">  861</span>  </div>
<div class="line"><a id="l00862" name="l00862"></a><span class="lineno">  862</span>  <span class="comment">//printf(&quot;m_visibleLines = %d m_firstVisibleFieldLine = %d m_lastVisibleFieldLine = %d\n&quot;, m_visibleLines, m_firstVisibleFieldLine, m_lastVisibleFieldLine);</span></div>
<div class="line"><a id="l00863" name="l00863"></a><span class="lineno">  863</span>  </div>
<div class="line"><a id="l00864" name="l00864"></a><span class="lineno">  864</span>  <span class="keywordtype">int</span> blankSamples          = m_params-&gt;hblank_us / m_sample_us;</div>
<div class="line"><a id="l00865" name="l00865"></a><span class="lineno">  865</span>  <span class="keywordtype">int</span> hsyncSamples          = m_params-&gt;hsync_us / m_sample_us;</div>
<div class="line"><a id="l00866" name="l00866"></a><span class="lineno">  866</span>  <span class="keywordtype">int</span> backPorchSamples      = m_params-&gt;backPorch_us / m_sample_us;</div>
<div class="line"><a id="l00867" name="l00867"></a><span class="lineno">  867</span>  <span class="keywordtype">int</span> usableVisibleSamples  = maxVisibleSamples - blankSamples;</div>
<div class="line"><a id="l00868" name="l00868"></a><span class="lineno">  868</span>  s_visibleSamplesCount     = imin(usableVisibleSamples, m_params-&gt;defaultVisibleSamples);</div>
<div class="line"><a id="l00869" name="l00869"></a><span class="lineno">  869</span>  s_firstVisibleSample      = (hsyncSamples + backPorchSamples + blankSamples + (usableVisibleSamples - s_visibleSamplesCount) / 2) &amp; ~1; <span class="comment">// aligned to 2</span></div>
<div class="line"><a id="l00870" name="l00870"></a><span class="lineno">  870</span>  </div>
<div class="line"><a id="l00871" name="l00871"></a><span class="lineno">  871</span>  <span class="keywordtype">double</span> subcarrierCycle_us = 1000000. / m_params-&gt;subcarrierFreq_hz; <span class="comment">// duration in microseconds of a subcarrier cycle</span></div>
<div class="line"><a id="l00872" name="l00872"></a><span class="lineno">  872</span>  </div>
<div class="line"><a id="l00873" name="l00873"></a><span class="lineno">  873</span>  m_firstColorBurstSample   = (m_params-&gt;hsync_us + m_params-&gt;hsyncEdge_us / 2. + m_params-&gt;burstStart_us) / m_sample_us;</div>
<div class="line"><a id="l00874" name="l00874"></a><span class="lineno">  874</span>  m_lastColorBurstSample    = m_firstColorBurstSample + (subcarrierCycle_us * m_params-&gt;burstCycles) / m_sample_us - 1;</div>
<div class="line"><a id="l00875" name="l00875"></a><span class="lineno">  875</span>}</div>
<div class="line"><a id="l00876" name="l00876"></a><span class="lineno">  876</span> </div>
<div class="line"><a id="l00877" name="l00877"></a><span class="lineno">  877</span> </div>
<div class="line"><a id="l00878" name="l00878"></a><span class="lineno">  878</span><span class="keywordtype">void</span> CVBSGenerator::run(<span class="keywordtype">bool</span> subCarrierOnly)</div>
<div class="line"><a id="l00879" name="l00879"></a><span class="lineno">  879</span>{</div>
<div class="line"><a id="l00880" name="l00880"></a><span class="lineno">  880</span>  <span class="keywordflow">if</span> (subCarrierOnly)</div>
<div class="line"><a id="l00881" name="l00881"></a><span class="lineno">  881</span>    buildDMAChain_subCarrierOnly();</div>
<div class="line"><a id="l00882" name="l00882"></a><span class="lineno">  882</span>  <span class="keywordflow">else</span></div>
<div class="line"><a id="l00883" name="l00883"></a><span class="lineno">  883</span>    buildDMAChain();</div>
<div class="line"><a id="l00884" name="l00884"></a><span class="lineno">  884</span>  runDMA(m_DMAChain);</div>
<div class="line"><a id="l00885" name="l00885"></a><span class="lineno">  885</span>}</div>
<div class="line"><a id="l00886" name="l00886"></a><span class="lineno">  886</span> </div>
<div class="line"><a id="l00887" name="l00887"></a><span class="lineno">  887</span> </div>
<div class="line"><a id="l00888" name="l00888"></a><span class="lineno">  888</span><span class="keywordtype">void</span> CVBSGenerator::stop()</div>
<div class="line"><a id="l00889" name="l00889"></a><span class="lineno">  889</span>{</div>
<div class="line"><a id="l00890" name="l00890"></a><span class="lineno">  890</span>  <span class="keywordflow">if</span> (m_DMAStarted) {</div>
<div class="line"><a id="l00891" name="l00891"></a><span class="lineno">  891</span> </div>
<div class="line"><a id="l00892" name="l00892"></a><span class="lineno">  892</span>    periph_module_disable(PERIPH_I2S0_MODULE);</div>
<div class="line"><a id="l00893" name="l00893"></a><span class="lineno">  893</span>    m_DMAStarted = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00894" name="l00894"></a><span class="lineno">  894</span> </div>
<div class="line"><a id="l00895" name="l00895"></a><span class="lineno">  895</span>    <span class="keywordflow">if</span> (m_isr_handle) {</div>
<div class="line"><a id="l00896" name="l00896"></a><span class="lineno">  896</span>      esp_intr_free(m_isr_handle);</div>
<div class="line"><a id="l00897" name="l00897"></a><span class="lineno">  897</span>      m_isr_handle = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00898" name="l00898"></a><span class="lineno">  898</span>    }</div>
<div class="line"><a id="l00899" name="l00899"></a><span class="lineno">  899</span> </div>
<div class="line"><a id="l00900" name="l00900"></a><span class="lineno">  900</span>    <span class="comment">// cleanup DMA chain and buffers</span></div>
<div class="line"><a id="l00901" name="l00901"></a><span class="lineno">  901</span>    <span class="keywordflow">if</span> (m_DMAChain) {</div>
<div class="line"><a id="l00902" name="l00902"></a><span class="lineno">  902</span>    </div>
<div class="line"><a id="l00903" name="l00903"></a><span class="lineno">  903</span>      heap_caps_free((<span class="keywordtype">void</span>*)m_DMAChain);</div>
<div class="line"><a id="l00904" name="l00904"></a><span class="lineno">  904</span>      m_DMAChain = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00905" name="l00905"></a><span class="lineno">  905</span>      </div>
<div class="line"><a id="l00906" name="l00906"></a><span class="lineno">  906</span>      <span class="keywordflow">if</span> (m_ssyncBuf) {</div>
<div class="line"><a id="l00907" name="l00907"></a><span class="lineno">  907</span>        heap_caps_free((<span class="keywordtype">void</span>*)m_ssyncBuf);</div>
<div class="line"><a id="l00908" name="l00908"></a><span class="lineno">  908</span>        m_ssyncBuf = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00909" name="l00909"></a><span class="lineno">  909</span>      }</div>
<div class="line"><a id="l00910" name="l00910"></a><span class="lineno">  910</span>      </div>
<div class="line"><a id="l00911" name="l00911"></a><span class="lineno">  911</span>      <span class="keywordflow">if</span> (m_lsyncBuf) {</div>
<div class="line"><a id="l00912" name="l00912"></a><span class="lineno">  912</span>        heap_caps_free((<span class="keywordtype">void</span>*)m_lsyncBuf);</div>
<div class="line"><a id="l00913" name="l00913"></a><span class="lineno">  913</span>        m_lsyncBuf = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00914" name="l00914"></a><span class="lineno">  914</span>      }</div>
<div class="line"><a id="l00915" name="l00915"></a><span class="lineno">  915</span>      </div>
<div class="line"><a id="l00916" name="l00916"></a><span class="lineno">  916</span>      <span class="keywordflow">if</span> (m_lineBuf) {</div>
<div class="line"><a id="l00917" name="l00917"></a><span class="lineno">  917</span>        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; CVBS_ALLOCATED_LINES; ++i)</div>
<div class="line"><a id="l00918" name="l00918"></a><span class="lineno">  918</span>          heap_caps_free((<span class="keywordtype">void</span>*)m_lineBuf[i]);</div>
<div class="line"><a id="l00919" name="l00919"></a><span class="lineno">  919</span>        free(m_lineBuf);</div>
<div class="line"><a id="l00920" name="l00920"></a><span class="lineno">  920</span>        m_lineBuf = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00921" name="l00921"></a><span class="lineno">  921</span>      }</div>
<div class="line"><a id="l00922" name="l00922"></a><span class="lineno">  922</span>      </div>
<div class="line"><a id="l00923" name="l00923"></a><span class="lineno">  923</span>      <span class="keywordflow">for</span> (<span class="keywordtype">int</span> frame = 0; frame &lt; m_params-&gt;frameGroupCount; ++frame)</div>
<div class="line"><a id="l00924" name="l00924"></a><span class="lineno">  924</span>        <span class="keywordflow">if</span> (m_subCarrierPhases[frame]) {</div>
<div class="line"><a id="l00925" name="l00925"></a><span class="lineno">  925</span>          heap_caps_free((<span class="keywordtype">void</span>*)m_subCarrierPhases[frame]);</div>
<div class="line"><a id="l00926" name="l00926"></a><span class="lineno">  926</span>          m_subCarrierPhases[frame] = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00927" name="l00927"></a><span class="lineno">  927</span>        }</div>
<div class="line"><a id="l00928" name="l00928"></a><span class="lineno">  928</span>        </div>
<div class="line"><a id="l00929" name="l00929"></a><span class="lineno">  929</span>      <span class="keywordflow">if</span> (s_lineSampleToSubCarrierSample) {</div>
<div class="line"><a id="l00930" name="l00930"></a><span class="lineno">  930</span>        heap_caps_free((<span class="keywordtype">void</span>*)s_lineSampleToSubCarrierSample);</div>
<div class="line"><a id="l00931" name="l00931"></a><span class="lineno">  931</span>        s_lineSampleToSubCarrierSample = <span class="keyword">nullptr</span>;</div>
<div class="line"><a id="l00932" name="l00932"></a><span class="lineno">  932</span>      }</div>
<div class="line"><a id="l00933" name="l00933"></a><span class="lineno">  933</span>      </div>
<div class="line"><a id="l00934" name="l00934"></a><span class="lineno">  934</span>    }</div>
<div class="line"><a id="l00935" name="l00935"></a><span class="lineno">  935</span> </div>
<div class="line"><a id="l00936" name="l00936"></a><span class="lineno">  936</span>  }</div>
<div class="line"><a id="l00937" name="l00937"></a><span class="lineno">  937</span>}</div>
<div class="line"><a id="l00938" name="l00938"></a><span class="lineno">  938</span> </div>
<div class="line"><a id="l00939" name="l00939"></a><span class="lineno">  939</span> </div>
<div class="line"><a id="l00940" name="l00940"></a><span class="lineno">  940</span><span class="keywordtype">void</span> CVBSGenerator::setDrawScanlineCallback(CVBSDrawScanlineCallback drawScanlineCallback, <span class="keywordtype">void</span> * arg)</div>
<div class="line"><a id="l00941" name="l00941"></a><span class="lineno">  941</span>{</div>
<div class="line"><a id="l00942" name="l00942"></a><span class="lineno">  942</span>  m_drawScanlineCallback = drawScanlineCallback;</div>
<div class="line"><a id="l00943" name="l00943"></a><span class="lineno">  943</span>  m_drawScanlineArg      = arg;</div>
<div class="line"><a id="l00944" name="l00944"></a><span class="lineno">  944</span>}</div>
<div class="line"><a id="l00945" name="l00945"></a><span class="lineno">  945</span> </div>
<div class="line"><a id="l00946" name="l00946"></a><span class="lineno">  946</span> </div>
<div class="line"><a id="l00947" name="l00947"></a><span class="lineno">  947</span><span class="keywordtype">void</span> IRAM_ATTR CVBSGenerator::ISRHandler(<span class="keywordtype">void</span> * arg)</div>
<div class="line"><a id="l00948" name="l00948"></a><span class="lineno">  948</span>{</div>
<div class="line"><a id="l00949" name="l00949"></a><span class="lineno">  949</span><span class="preprocessor">  #if FABGLIB_CVBSCONTROLLER_PERFORMANCE_CHECK</span></div>
<div class="line"><a id="l00950" name="l00950"></a><span class="lineno">  950</span>  <span class="keyword">auto</span> s1 = getCycleCount();</div>
<div class="line"><a id="l00951" name="l00951"></a><span class="lineno">  951</span><span class="preprocessor">  #endif</span></div>
<div class="line"><a id="l00952" name="l00952"></a><span class="lineno">  952</span> </div>
<div class="line"><a id="l00953" name="l00953"></a><span class="lineno">  953</span>  <span class="keywordflow">if</span> (I2S0.int_st.out_eof) {</div>
<div class="line"><a id="l00954" name="l00954"></a><span class="lineno">  954</span> </div>
<div class="line"><a id="l00955" name="l00955"></a><span class="lineno">  955</span>    <span class="keyword">auto</span> ctrl = (CVBSGenerator *) arg;</div>
<div class="line"><a id="l00956" name="l00956"></a><span class="lineno">  956</span>    <span class="keyword">auto</span> desc = (<span class="keyword">volatile</span> lldesc_t*) I2S0.out_eof_des_addr;</div>
<div class="line"><a id="l00957" name="l00957"></a><span class="lineno">  957</span>    </div>
<div class="line"><a id="l00958" name="l00958"></a><span class="lineno">  958</span>    <span class="comment">// begin of field?</span></div>
<div class="line"><a id="l00959" name="l00959"></a><span class="lineno">  959</span>    if (desc-&gt;sosf) {</div>
<div class="line"><a id="l00960" name="l00960"></a><span class="lineno">  960</span>      s_field = (s_field + 1) % ctrl-&gt;m_params-&gt;fields;</div>
<div class="line"><a id="l00961" name="l00961"></a><span class="lineno">  961</span>      if (s_field == 0)</div>
<div class="line"><a id="l00962" name="l00962"></a><span class="lineno">  962</span>        s_frame = (s_frame + 1) % ctrl-&gt;m_params-&gt;frameGroupCount;  <span class="comment">// first field</span></div>
<div class="line"><a id="l00963" name="l00963"></a><span class="lineno">  963</span>      s_frameLine        = ctrl-&gt;m_firstActiveFrameLine[s_field];</div>
<div class="line"><a id="l00964" name="l00964"></a><span class="lineno">  964</span>      s_subCarrierPhase  = &amp;(ctrl-&gt;m_subCarrierPhases[s_frame][s_frameLine]);</div>
<div class="line"><a id="l00965" name="l00965"></a><span class="lineno">  965</span>      s_activeLineIndex  = 0;</div>
<div class="line"><a id="l00966" name="l00966"></a><span class="lineno">  966</span>      s_scanLine         = ctrl-&gt;m_startingScanLine[s_field];</div>
<div class="line"><a id="l00967" name="l00967"></a><span class="lineno">  967</span>      s_lineSwitch       = ctrl-&gt;m_firstActiveFieldLineSwitch[s_frame][s_field];</div>
<div class="line"><a id="l00968" name="l00968"></a><span class="lineno">  968</span>      s_VSync            = <span class="keyword">false</span>;</div>
<div class="line"><a id="l00969" name="l00969"></a><span class="lineno">  969</span>    }</div>
<div class="line"><a id="l00970" name="l00970"></a><span class="lineno">  970</span> </div>
<div class="line"><a id="l00971" name="l00971"></a><span class="lineno">  971</span>    <span class="keyword">auto</span> drawScanlineCallback  = ctrl-&gt;m_drawScanlineCallback;</div>
<div class="line"><a id="l00972" name="l00972"></a><span class="lineno">  972</span>    <span class="keyword">auto</span> drawScanlineArg       = ctrl-&gt;m_drawScanlineArg;</div>
<div class="line"><a id="l00973" name="l00973"></a><span class="lineno">  973</span>    <span class="keyword">auto</span> lineBuf               = ctrl-&gt;m_lineBuf;</div>
<div class="line"><a id="l00974" name="l00974"></a><span class="lineno">  974</span>    <span class="keyword">auto</span> firstVisibleFrameLine = ctrl-&gt;m_firstVisibleFrameLine[s_field];</div>
<div class="line"><a id="l00975" name="l00975"></a><span class="lineno">  975</span>    <span class="keyword">auto</span> lastVisibleFrameLine  = ctrl-&gt;m_lastVisibleFrameLine[s_field];</div>
<div class="line"><a id="l00976" name="l00976"></a><span class="lineno">  976</span>    <span class="keyword">auto</span> firstColorBurstSample = ctrl-&gt;m_firstColorBurstSample;</div>
<div class="line"><a id="l00977" name="l00977"></a><span class="lineno">  977</span>    <span class="keyword">auto</span> lastColorBurstSample  = ctrl-&gt;m_lastColorBurstSample;</div>
<div class="line"><a id="l00978" name="l00978"></a><span class="lineno">  978</span>    <span class="keyword">auto</span> interlaceFactor       = ctrl-&gt;m_params-&gt;interlaceFactor;</div>
<div class="line"><a id="l00979" name="l00979"></a><span class="lineno">  979</span>    </div>
<div class="line"><a id="l00980" name="l00980"></a><span class="lineno">  980</span>    <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; CVBS_ALLOCATED_LINES / 2; ++i) {</div>
<div class="line"><a id="l00981" name="l00981"></a><span class="lineno">  981</span>    </div>
<div class="line"><a id="l00982" name="l00982"></a><span class="lineno">  982</span>      <span class="keyword">auto</span> fullLineBuf = (uint16_t*)lineBuf[s_activeLineIndex % CVBS_ALLOCATED_LINES];</div>
<div class="line"><a id="l00983" name="l00983"></a><span class="lineno">  983</span> </div>
<div class="line"><a id="l00984" name="l00984"></a><span class="lineno">  984</span>      <span class="keywordflow">if</span> (*s_subCarrierPhase == CVBS_NOBURSTFLAG) {</div>
<div class="line"><a id="l00985" name="l00985"></a><span class="lineno">  985</span>        <span class="comment">// no burst for this line</span></div>
<div class="line"><a id="l00986" name="l00986"></a><span class="lineno">  986</span>        uint16_t blk = ctrl-&gt;m_params-&gt;blackLevel &lt;&lt; 8;</div>
<div class="line"><a id="l00987" name="l00987"></a><span class="lineno">  987</span>        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = firstColorBurstSample; s &lt;= lastColorBurstSample; ++s)</div>
<div class="line"><a id="l00988" name="l00988"></a><span class="lineno">  988</span>          fullLineBuf[s ^ 1] = blk;</div>
<div class="line"><a id="l00989" name="l00989"></a><span class="lineno">  989</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l00990" name="l00990"></a><span class="lineno">  990</span>        <span class="comment">// fill color burst</span></div>
<div class="line"><a id="l00991" name="l00991"></a><span class="lineno">  991</span>        <span class="keyword">auto</span> colorBurstLUT = (uint16_t *) ctrl-&gt;m_colorBurstLUT[s_lineSwitch];</div>
<div class="line"><a id="l00992" name="l00992"></a><span class="lineno">  992</span>        <span class="keyword">auto</span> sampleLUT     = CVBSGenerator::lineSampleToSubCarrierSample() + firstColorBurstSample;</div>
<div class="line"><a id="l00993" name="l00993"></a><span class="lineno">  993</span>        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> s = firstColorBurstSample; s &lt;= lastColorBurstSample; ++s)</div>
<div class="line"><a id="l00994" name="l00994"></a><span class="lineno">  994</span>          fullLineBuf[s ^ 1] = colorBurstLUT[*sampleLUT++ + *s_subCarrierPhase];</div>
<div class="line"><a id="l00995" name="l00995"></a><span class="lineno">  995</span>      }</div>
<div class="line"><a id="l00996" name="l00996"></a><span class="lineno">  996</span>      </div>
<div class="line"><a id="l00997" name="l00997"></a><span class="lineno">  997</span>      <span class="comment">// fill active area</span></div>
<div class="line"><a id="l00998" name="l00998"></a><span class="lineno">  998</span>      <span class="keywordflow">if</span> (s_frameLine &gt;= firstVisibleFrameLine &amp;&amp; s_frameLine &lt;= lastVisibleFrameLine) {</div>
<div class="line"><a id="l00999" name="l00999"></a><span class="lineno">  999</span>        <span class="comment">// visible lines</span></div>
<div class="line"><a id="l01000" name="l01000"></a><span class="lineno"> 1000</span>        drawScanlineCallback(drawScanlineArg, fullLineBuf, s_firstVisibleSample, s_scanLine);</div>
<div class="line"><a id="l01001" name="l01001"></a><span class="lineno"> 1001</span>        s_scanLine += interlaceFactor; <span class="comment">// +2 if interlaced, +1 if progressive</span></div>
<div class="line"><a id="l01002" name="l01002"></a><span class="lineno"> 1002</span>      } <span class="keywordflow">else</span> {</div>
<div class="line"><a id="l01003" name="l01003"></a><span class="lineno"> 1003</span>        <span class="comment">// blank lines</span></div>
<div class="line"><a id="l01004" name="l01004"></a><span class="lineno"> 1004</span>        <span class="keyword">auto</span> visibleBuf = fullLineBuf + s_firstVisibleSample;</div>
<div class="line"><a id="l01005" name="l01005"></a><span class="lineno"> 1005</span>        uint32_t blackFillX2 = (ctrl-&gt;m_params-&gt;blackLevel &lt;&lt; 8) | (ctrl-&gt;m_params-&gt;blackLevel &lt;&lt; (8 + 16));</div>
<div class="line"><a id="l01006" name="l01006"></a><span class="lineno"> 1006</span>        <span class="keywordflow">for</span> (<span class="keywordtype">int</span> col = 0; col &lt; s_visibleSamplesCount; col += 2, visibleBuf += 2)</div>
<div class="line"><a id="l01007" name="l01007"></a><span class="lineno"> 1007</span>          *((uint32_t*)(visibleBuf)) = blackFillX2;</div>
<div class="line"><a id="l01008" name="l01008"></a><span class="lineno"> 1008</span>      }</div>
<div class="line"><a id="l01009" name="l01009"></a><span class="lineno"> 1009</span>      </div>
<div class="line"><a id="l01010" name="l01010"></a><span class="lineno"> 1010</span>      ++s_activeLineIndex;</div>
<div class="line"><a id="l01011" name="l01011"></a><span class="lineno"> 1011</span>      ++s_frameLine;</div>
<div class="line"><a id="l01012" name="l01012"></a><span class="lineno"> 1012</span>      ++s_subCarrierPhase;</div>
<div class="line"><a id="l01013" name="l01013"></a><span class="lineno"> 1013</span>      s_lineSwitch = !s_lineSwitch;</div>
<div class="line"><a id="l01014" name="l01014"></a><span class="lineno"> 1014</span>      </div>
<div class="line"><a id="l01015" name="l01015"></a><span class="lineno"> 1015</span>    }</div>
<div class="line"><a id="l01016" name="l01016"></a><span class="lineno"> 1016</span> </div>
<div class="line"><a id="l01017" name="l01017"></a><span class="lineno"> 1017</span>    <span class="keywordflow">if</span> (s_frameLine &gt;= lastVisibleFrameLine)</div>
<div class="line"><a id="l01018" name="l01018"></a><span class="lineno"> 1018</span>      s_VSync = <span class="keyword">true</span>;</div>
<div class="line"><a id="l01019" name="l01019"></a><span class="lineno"> 1019</span>  }</div>
<div class="line"><a id="l01020" name="l01020"></a><span class="lineno"> 1020</span> </div>
<div class="line"><a id="l01021" name="l01021"></a><span class="lineno"> 1021</span><span class="preprocessor">  #if FABGLIB_CVBSCONTROLLER_PERFORMANCE_CHECK</span></div>
<div class="line"><a id="l01022" name="l01022"></a><span class="lineno"> 1022</span>  s_cvbsctrlcycles += getCycleCount() - s1;</div>
<div class="line"><a id="l01023" name="l01023"></a><span class="lineno"> 1023</span><span class="preprocessor">  #endif</span></div>
<div class="line"><a id="l01024" name="l01024"></a><span class="lineno"> 1024</span> </div>
<div class="line"><a id="l01025" name="l01025"></a><span class="lineno"> 1025</span>  I2S0.int_clr.val = I2S0.int_st.val;</div>
<div class="line"><a id="l01026" name="l01026"></a><span class="lineno"> 1026</span>}</div>
<div class="line"><a id="l01027" name="l01027"></a><span class="lineno"> 1027</span> </div>
<div class="line"><a id="l01028" name="l01028"></a><span class="lineno"> 1028</span> </div>
<div class="line"><a id="l01029" name="l01029"></a><span class="lineno"> 1029</span> </div>
<div class="line"><a id="l01030" name="l01030"></a><span class="lineno"> 1030</span>} <span class="comment">// namespace fabgl</span></div>
<div class="ttc" id="adisplaycontroller_8h_abe4637362df8e341470401813999dd17_html_abe4637362df8e341470401813999dd17"><div class="ttname"><a href="displaycontroller_8h_abe4637362df8e341470401813999dd17.html#abe4637362df8e341470401813999dd17">Y</a></div><div class="ttdeci">int16_t Y</div><div class="ttdef"><b>Definition:</b> <a href="displaycontroller_8h_source.html#l00001">displaycontroller.h:1</a></div></div>
<div class="ttc" id="afabglconf_8h_a447d700c9e4cb4889f3517928ecfac31_html_a447d700c9e4cb4889f3517928ecfac31"><div class="ttname"><a href="fabglconf_8h_a447d700c9e4cb4889f3517928ecfac31.html#a447d700c9e4cb4889f3517928ecfac31">FABGLIB_VIDEO_CPUINTENSIVE_TASKS_CORE</a></div><div class="ttdeci">#define FABGLIB_VIDEO_CPUINTENSIVE_TASKS_CORE</div><div class="ttdef"><b>Definition:</b> <a href="fabglconf_8h_source.html#l00142">fabglconf.h:142</a></div></div>
<div class="ttc" id="afabutils_8h_html"><div class="ttname"><a href="fabutils_8h.html">fabutils.h</a></div><div class="ttdoc">This file contains some utility classes and functions.</div></div>
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